Best Free APIs Directory

Find free APIs for AI, weather, finance, and development projects in our curated directory.

The Best Free APIs for Developers

Find the perfect free API for your next project. Our curated directory features hundreds of free APIs across AI, weather, finance, and developer tools - all verified to offer genuine free tiers without credit card requirements.

Whether you need AI APIs for natural language processing, Weather APIs for forecasts and historical data, Finance APIs for stock and crypto data, or Developer APIs for GitHub integration and more - we have you covered.

Pro tip: Each API card includes a copy button for the endpoint URL. Click to copy and integrate into your projects quickly.

Showing 385-432 of 1467 APIs

Screenshot logo

Screenshot

Development

Free

Screenshot is an API listed in the Development category that provides access to take programmatic screenshots of web pages from any website. It is intended for developers who want to integrate this type of development data or functionality into websites, mobile applications, dashboards, automation workflows, research projects, prototypes, or backend services without building the underlying data source or service from scratch. From the supplied API metadata, the supplied listing identifies apiKey as the authentication method; HTTPS support is listed as available; CORS is listed as Yes. This makes Screenshot a useful integration candidate when a project needs take programmatic screenshots of web pages from any website through a programmatic interface. Because API capabilities, quotas, authentication rules, endpoints, and availability can change over time, the provider documentation should be treated as the current technical reference.

Development`apiKey`true
Free

ScreenshotAPI.net is an API listed in the Development category that provides access to create pixel-perfect website screenshots. It is intended for developers who want to integrate this type of development data or functionality into websites, mobile applications, dashboards, automation workflows, research projects, prototypes, or backend services without building the underlying data source or service from scratch. From the supplied API metadata, the supplied listing identifies apiKey as the authentication method; HTTPS support is listed as available; CORS is listed as Yes. This makes ScreenshotAPI.net a useful integration candidate when a project needs create pixel-perfect website screenshots through a programmatic interface. Because API capabilities, quotas, authentication rules, endpoints, and availability can change over time, the provider documentation should be treated as the current technical reference.

Development`apiKey`true
Serialif Color logo

Serialif Color

Development

Free

Serialif Color is an API listed in the Development category that provides access to color conversion, complementary, grayscale and contrasted text. It is intended for developers who want to integrate this type of development data or functionality into websites, mobile applications, dashboards, automation workflows, research projects, prototypes, or backend services without building the underlying data source or service from scratch. From the supplied API metadata, the supplied listing indicates that authentication is not required; HTTPS support is listed as available; CORS is listed as No. This makes Serialif Color a useful integration candidate when a project needs color conversion, complementary, grayscale and contrasted text through a programmatic interface. Because API capabilities, quotas, authentication rules, endpoints, and availability can change over time, the provider documentation should be treated as the current technical reference.

DevelopmentNotrue
serpstack logo

serpstack

Development

Free

serpstack is an API listed in the Development category that provides access to real-Time & Accurate Google Search Results API. It is intended for developers who want to integrate this type of development data or functionality into websites, mobile applications, dashboards, automation workflows, research projects, prototypes, or backend services without building the underlying data source or service from scratch. From the supplied API metadata, the supplied listing identifies apiKey as the authentication method; HTTPS support is listed as available; CORS is listed as Yes. This makes serpstack a useful integration candidate when a project needs real-Time & Accurate Google Search Results API through a programmatic interface. Because API capabilities, quotas, authentication rules, endpoints, and availability can change over time, the provider documentation should be treated as the current technical reference.

Development`apiKey`true
Sheetsu logo

Sheetsu

Development

Free

Sheetsu is an API listed in the Development category that provides access to easy google sheets integration. It is intended for developers who want to integrate this type of development data or functionality into websites, mobile applications, dashboards, automation workflows, research projects, prototypes, or backend services without building the underlying data source or service from scratch. From the supplied API metadata, the supplied listing identifies apiKey as the authentication method; HTTPS support is listed as available. This makes Sheetsu a useful integration candidate when a project needs easy google sheets integration through a programmatic interface. Because API capabilities, quotas, authentication rules, endpoints, and availability can change over time, the provider documentation should be treated as the current technical reference.

Development`apiKey`true
SHOUTCLOUD logo

SHOUTCLOUD

Development

Free

SHOUTCLOUD is an API listed in the Development category that provides access to ALL-CAPS AS A SERVICE. It is intended for developers who want to integrate this type of development data or functionality into websites, mobile applications, dashboards, automation workflows, research projects, prototypes, or backend services without building the underlying data source or service from scratch. From the supplied API metadata, the supplied listing indicates that authentication is not required; HTTPS support is listed as unavailable. This makes SHOUTCLOUD a useful integration candidate when a project needs ALL-CAPS AS A SERVICE through a programmatic interface. Because API capabilities, quotas, authentication rules, endpoints, and availability can change over time, the provider documentation should be treated as the current technical reference.

DevelopmentNofalse
Sonar logo

Sonar

Development

Free

Sonar is an API listed in the Development category that provides access to project Sonar DNS Enumeration API. It is intended for developers who want to integrate this type of development data or functionality into websites, mobile applications, dashboards, automation workflows, research projects, prototypes, or backend services without building the underlying data source or service from scratch. From the supplied API metadata, the supplied listing indicates that authentication is not required; HTTPS support is listed as available; CORS is listed as Yes. This makes Sonar a useful integration candidate when a project needs project Sonar DNS Enumeration API through a programmatic interface. Because API capabilities, quotas, authentication rules, endpoints, and availability can change over time, the provider documentation should be treated as the current technical reference.

DevelopmentNotrue
SonarQube logo

SonarQube

Development

Free

SonarQube is an API listed in the Development category that provides access to sonarQube REST APIs to detect bugs, code smells & security vulnerabilities. It is intended for developers who want to integrate this type of development data or functionality into websites, mobile applications, dashboards, automation workflows, research projects, prototypes, or backend services without building the underlying data source or service from scratch. From the supplied API metadata, the supplied listing identifies OAuth as the authentication method; HTTPS support is listed as available. This makes SonarQube a useful integration candidate when a project needs sonarQube REST APIs to detect bugs, code smells & security vulnerabilities through a programmatic interface. Because API capabilities, quotas, authentication rules, endpoints, and availability can change over time, the provider documentation should be treated as the current technical reference.

Development`OAuth`true
StackExchange logo

StackExchange

Development

Free

StackExchange is an API listed in the Development category that provides access to q&A forum for developers. It is intended for developers who want to integrate this type of development data or functionality into websites, mobile applications, dashboards, automation workflows, research projects, prototypes, or backend services without building the underlying data source or service from scratch. From the supplied API metadata, the supplied listing identifies OAuth as the authentication method; HTTPS support is listed as available. This makes StackExchange a useful integration candidate when a project needs q&A forum for developers through a programmatic interface. Because API capabilities, quotas, authentication rules, endpoints, and availability can change over time, the provider documentation should be treated as the current technical reference.

Development`OAuth`true
Statically logo

Statically

Development

Free

Statically is an API listed in the Development category that provides access to a free CDN for developers. It is intended for developers who want to integrate this type of development data or functionality into websites, mobile applications, dashboards, automation workflows, research projects, prototypes, or backend services without building the underlying data source or service from scratch. From the supplied API metadata, the supplied listing indicates that authentication is not required; HTTPS support is listed as available; CORS is listed as Yes. This makes Statically a useful integration candidate when a project needs a free CDN for developers through a programmatic interface. Because API capabilities, quotas, authentication rules, endpoints, and availability can change over time, the provider documentation should be treated as the current technical reference.

DevelopmentNotrue
Supportivekoala logo

Supportivekoala

Development

Free

Supportivekoala is an API listed in the Development category that provides access to autogenerate images with template. It is intended for developers who want to integrate this type of development data or functionality into websites, mobile applications, dashboards, automation workflows, research projects, prototypes, or backend services without building the underlying data source or service from scratch. From the supplied API metadata, the supplied listing identifies apiKey as the authentication method; HTTPS support is listed as available; CORS is listed as Yes. This makes Supportivekoala a useful integration candidate when a project needs autogenerate images with template through a programmatic interface. Because API capabilities, quotas, authentication rules, endpoints, and availability can change over time, the provider documentation should be treated as the current technical reference.

Development`apiKey`true
Suprsonic logo

Suprsonic

Development

Free

Suprsonic is an API listed in the Development category that provides access to unified agent API: search, scrape, enrich, image gen, TTS, STT, messaging. One key, 20+ capabilities. It is intended for developers who want to integrate this type of development data or functionality into websites, mobile applications, dashboards, automation workflows, research projects, prototypes, or backend services without building the underlying data source or service from scratch. From the supplied API metadata, the supplied listing identifies apiKey as the authentication method; HTTPS support is listed as available; CORS is listed as Yes. This makes Suprsonic a useful integration candidate when a project needs unified agent API: search, scrape, enrich, image gen, TTS, STT, messaging. One key, 20+ capabilities through a programmatic interface. Because API capabilities, quotas, authentication rules, endpoints, and availability can change over time, the provider documentation should be treated as the current technical reference.

Development`apiKey`true
Thunderbit logo

Thunderbit

Development

Free

Thunderbit is an API listed in the Development category that provides access to extract web pages as Markdown or structured data for AI apps. It is intended for developers who want to integrate this type of development data or functionality into websites, mobile applications, dashboards, automation workflows, research projects, prototypes, or backend services without building the underlying data source or service from scratch. From the supplied API metadata, the supplied listing identifies apiKey as the authentication method; HTTPS support is listed as available. This makes Thunderbit a useful integration candidate when a project needs extract web pages as Markdown or structured data for AI apps through a programmatic interface. Because API capabilities, quotas, authentication rules, endpoints, and availability can change over time, the provider documentation should be treated as the current technical reference.

Development`apiKey`true
Tyk logo

Tyk

Development

Free

Tyk is an API listed in the Development category that provides access to api and service management platform. It is intended for developers who want to integrate this type of development data or functionality into websites, mobile applications, dashboards, automation workflows, research projects, prototypes, or backend services without building the underlying data source or service from scratch. From the supplied API metadata, the supplied listing identifies apiKey as the authentication method; HTTPS support is listed as available; CORS is listed as Yes. This makes Tyk a useful integration candidate when a project needs api and service management platform through a programmatic interface. Because API capabilities, quotas, authentication rules, endpoints, and availability can change over time, the provider documentation should be treated as the current technical reference.

Development`apiKey`true
Wandbox logo

Wandbox

Development

Free

Wandbox is an API listed in the Development category that provides access to code compiler supporting 35+ languages mentioned at wandbox.org. It is intended for developers who want to integrate this type of development data or functionality into websites, mobile applications, dashboards, automation workflows, research projects, prototypes, or backend services without building the underlying data source or service from scratch. From the supplied API metadata, the supplied listing indicates that authentication is not required; HTTPS support is listed as available. This makes Wandbox a useful integration candidate when a project needs code compiler supporting 35+ languages mentioned at wandbox.org through a programmatic interface. Because API capabilities, quotas, authentication rules, endpoints, and availability can change over time, the provider documentation should be treated as the current technical reference.

DevelopmentNotrue
WebScraping.AI logo

WebScraping.AI

Development

Free

WebScraping.AI is an API listed in the Development category that provides access to web Scraping API with built-in proxies and JS rendering. It is intended for developers who want to integrate this type of development data or functionality into websites, mobile applications, dashboards, automation workflows, research projects, prototypes, or backend services without building the underlying data source or service from scratch. From the supplied API metadata, the supplied listing identifies apiKey as the authentication method; HTTPS support is listed as available; CORS is listed as Yes. This makes WebScraping.AI a useful integration candidate when a project needs web Scraping API with built-in proxies and JS rendering through a programmatic interface. Because API capabilities, quotas, authentication rules, endpoints, and availability can change over time, the provider documentation should be treated as the current technical reference.

Development`apiKey`true
ZenRows logo

ZenRows

Development

Free

ZenRows is an API listed in the Development category that provides access to web Scraping API that bypasses anti-bot solutions while offering JS rendering, and rotating proxies. It is intended for developers who want to integrate this type of development data or functionality into websites, mobile applications, dashboards, automation workflows, research projects, prototypes, or backend services without building the underlying data source or service from scratch. From the supplied API metadata, the supplied listing identifies apiKey as the authentication method; HTTPS support is listed as available. This makes ZenRows a useful integration candidate when a project needs web Scraping API that bypasses anti-bot solutions while offering JS rendering, and rotating proxies through a programmatic interface. Because API capabilities, quotas, authentication rules, endpoints, and availability can change over time, the provider documentation should be treated as the current technical reference.

Development`apiKey`true
Free

Chinese Character Web is an API listed in the Dictionaries category that provides access to chinese character definitions and pronunciations. It is intended for developers who want to integrate this type of dictionaries data or functionality into websites, mobile applications, dashboards, automation workflows, research projects, prototypes, or backend services without building the underlying data source or service from scratch. From the supplied API metadata, the supplied listing indicates that authentication is not required; HTTPS support is listed as unavailable; CORS is listed as No. This makes Chinese Character Web a useful integration candidate when a project needs chinese character definitions and pronunciations through a programmatic interface. Because API capabilities, quotas, authentication rules, endpoints, and availability can change over time, the provider documentation should be treated as the current technical reference.

DictionariesNofalse
Free

Chinese Text Project is an API listed in the Dictionaries category that provides access to online open-access digital library for pre-modern Chinese texts. It is intended for developers who want to integrate this type of dictionaries data or functionality into websites, mobile applications, dashboards, automation workflows, research projects, prototypes, or backend services without building the underlying data source or service from scratch. From the supplied API metadata, the supplied listing indicates that authentication is not required; HTTPS support is listed as available. This makes Chinese Text Project a useful integration candidate when a project needs online open-access digital library for pre-modern Chinese texts through a programmatic interface. Because API capabilities, quotas, authentication rules, endpoints, and availability can change over time, the provider documentation should be treated as the current technical reference.

DictionariesNotrue
Collins logo

Collins

Dictionaries

Free

Collins is an API listed in the Dictionaries category that provides access to bilingual Dictionary and Thesaurus Data. It is intended for developers who want to integrate this type of dictionaries data or functionality into websites, mobile applications, dashboards, automation workflows, research projects, prototypes, or backend services without building the underlying data source or service from scratch. From the supplied API metadata, the supplied listing identifies apiKey as the authentication method; HTTPS support is listed as available. This makes Collins a useful integration candidate when a project needs bilingual Dictionary and Thesaurus Data through a programmatic interface. Because API capabilities, quotas, authentication rules, endpoints, and availability can change over time, the provider documentation should be treated as the current technical reference.

Dictionaries`apiKey`true
Free Dictionary logo

Free Dictionary

Dictionaries

Free

Free Dictionary is an API listed in the Dictionaries category that provides access to definitions, phonetics, pronounciations, parts of speech, examples, synonyms. It is intended for developers who want to integrate this type of dictionaries data or functionality into websites, mobile applications, dashboards, automation workflows, research projects, prototypes, or backend services without building the underlying data source or service from scratch. From the supplied API metadata, the supplied listing indicates that authentication is not required; HTTPS support is listed as available. This makes Free Dictionary a useful integration candidate when a project needs definitions, phonetics, pronounciations, parts of speech, examples, synonyms through a programmatic interface. Because API capabilities, quotas, authentication rules, endpoints, and availability can change over time, the provider documentation should be treated as the current technical reference.

DictionariesNotrue
Free

Indonesia Dictionary is an API listed in the Dictionaries category that provides access to indonesia dictionary many words. It is intended for developers who want to integrate this type of dictionaries data or functionality into websites, mobile applications, dashboards, automation workflows, research projects, prototypes, or backend services without building the underlying data source or service from scratch. From the supplied API metadata, the supplied listing indicates that authentication is not required; HTTPS support is listed as available. This makes Indonesia Dictionary a useful integration candidate when a project needs indonesia dictionary many words through a programmatic interface. Because API capabilities, quotas, authentication rules, endpoints, and availability can change over time, the provider documentation should be treated as the current technical reference.

DictionariesNotrue
Lingua Robot logo

Lingua Robot

Dictionaries

Free

Lingua Robot is an API listed in the Dictionaries category that provides access to word definitions, pronunciations, synonyms, antonyms and others. It is intended for developers who want to integrate this type of dictionaries data or functionality into websites, mobile applications, dashboards, automation workflows, research projects, prototypes, or backend services without building the underlying data source or service from scratch. From the supplied API metadata, the supplied listing identifies apiKey as the authentication method; HTTPS support is listed as available; CORS is listed as Yes. This makes Lingua Robot a useful integration candidate when a project needs word definitions, pronunciations, synonyms, antonyms and others through a programmatic interface. Because API capabilities, quotas, authentication rules, endpoints, and availability can change over time, the provider documentation should be treated as the current technical reference.

Dictionaries`apiKey`true
Merriam-Webster logo

Merriam-Webster

Dictionaries

Free

Merriam-Webster is an API listed in the Dictionaries category that provides access to dictionary and Thesaurus Data. It is intended for developers who want to integrate this type of dictionaries data or functionality into websites, mobile applications, dashboards, automation workflows, research projects, prototypes, or backend services without building the underlying data source or service from scratch. From the supplied API metadata, the supplied listing identifies apiKey as the authentication method; HTTPS support is listed as available. This makes Merriam-Webster a useful integration candidate when a project needs dictionary and Thesaurus Data through a programmatic interface. Because API capabilities, quotas, authentication rules, endpoints, and availability can change over time, the provider documentation should be treated as the current technical reference.

Dictionaries`apiKey`true
OwlBot logo

OwlBot

Dictionaries

Free

OwlBot is an API listed in the Dictionaries category that provides access to definitions with example sentence and photo if available. It is intended for developers who want to integrate this type of dictionaries data or functionality into websites, mobile applications, dashboards, automation workflows, research projects, prototypes, or backend services without building the underlying data source or service from scratch. From the supplied API metadata, the supplied listing identifies apiKey as the authentication method; HTTPS support is listed as available; CORS is listed as Yes. This makes OwlBot a useful integration candidate when a project needs definitions with example sentence and photo if available through a programmatic interface. Because API capabilities, quotas, authentication rules, endpoints, and availability can change over time, the provider documentation should be treated as the current technical reference.

Dictionaries`apiKey`true
Oxford logo

Oxford

Dictionaries

Free

Oxford is an API listed in the Dictionaries category that provides access to dictionary Data. It is intended for developers who want to integrate this type of dictionaries data or functionality into websites, mobile applications, dashboards, automation workflows, research projects, prototypes, or backend services without building the underlying data source or service from scratch. From the supplied API metadata, the supplied listing identifies apiKey as the authentication method; HTTPS support is listed as available; CORS is listed as No. This makes Oxford a useful integration candidate when a project needs dictionary Data through a programmatic interface. Because API capabilities, quotas, authentication rules, endpoints, and availability can change over time, the provider documentation should be treated as the current technical reference.

Dictionaries`apiKey`true
Synonyms logo

Synonyms

Dictionaries

Free

Synonyms is an API listed in the Dictionaries category that provides access to synonyms, thesaurus and antonyms information for any given word. It is intended for developers who want to integrate this type of dictionaries data or functionality into websites, mobile applications, dashboards, automation workflows, research projects, prototypes, or backend services without building the underlying data source or service from scratch. From the supplied API metadata, the supplied listing identifies apiKey as the authentication method; HTTPS support is listed as available. This makes Synonyms a useful integration candidate when a project needs synonyms, thesaurus and antonyms information for any given word through a programmatic interface. Because API capabilities, quotas, authentication rules, endpoints, and availability can change over time, the provider documentation should be treated as the current technical reference.

Dictionaries`apiKey`true
Wiktionary logo

Wiktionary

Dictionaries

Free

Wiktionary is an API listed in the Dictionaries category that provides access to collaborative dictionary data. It is intended for developers who want to integrate this type of dictionaries data or functionality into websites, mobile applications, dashboards, automation workflows, research projects, prototypes, or backend services without building the underlying data source or service from scratch. From the supplied API metadata, the supplied listing indicates that authentication is not required; HTTPS support is listed as available; CORS is listed as Yes. This makes Wiktionary a useful integration candidate when a project needs collaborative dictionary data through a programmatic interface. Because API capabilities, quotas, authentication rules, endpoints, and availability can change over time, the provider documentation should be treated as the current technical reference.

DictionariesNotrue
Wordnik logo

Wordnik

Dictionaries

Free

Wordnik is an API listed in the Dictionaries category that provides access to dictionary Data. It is intended for developers who want to integrate this type of dictionaries data or functionality into websites, mobile applications, dashboards, automation workflows, research projects, prototypes, or backend services without building the underlying data source or service from scratch. From the supplied API metadata, the supplied listing identifies apiKey as the authentication method; HTTPS support is listed as available. This makes Wordnik a useful integration candidate when a project needs dictionary Data through a programmatic interface. Because API capabilities, quotas, authentication rules, endpoints, and availability can change over time, the provider documentation should be treated as the current technical reference.

Dictionaries`apiKey`true
Words logo

Words

Dictionaries

Free

Words is an API listed in the Dictionaries category that provides access to definitions and synonyms for more than 150,000 words. It is intended for developers who want to integrate this type of dictionaries data or functionality into websites, mobile applications, dashboards, automation workflows, research projects, prototypes, or backend services without building the underlying data source or service from scratch. From the supplied API metadata, the supplied listing identifies apiKey as the authentication method; HTTPS support is listed as available. This makes Words a useful integration candidate when a project needs definitions and synonyms for more than 150,000 words through a programmatic interface. Because API capabilities, quotas, authentication rules, endpoints, and availability can change over time, the provider documentation should be treated as the current technical reference.

Dictionaries`apiKey`true
Airtable logo

Airtable

Documents & Productivity

Free

Airtable is an API listed in the Documents & Productivity category that provides access to integrate with Airtable. It is intended for developers who want to integrate this type of documents & productivity data or functionality into websites, mobile applications, dashboards, automation workflows, research projects, prototypes, or backend services without building the underlying data source or service from scratch. From the supplied API metadata, the supplied listing identifies apiKey as the authentication method; HTTPS support is listed as available. This makes Airtable a useful integration candidate when a project needs integrate with Airtable through a programmatic interface. Because API capabilities, quotas, authentication rules, endpoints, and availability can change over time, the provider documentation should be treated as the current technical reference.

Documents & Productivity`apiKey`true
Api2Convert logo

Api2Convert

Documents & Productivity

Free

Api2Convert is an API listed in the Documents & Productivity category that provides access to online File Conversion API. It is intended for developers who want to integrate this type of documents & productivity data or functionality into websites, mobile applications, dashboards, automation workflows, research projects, prototypes, or backend services without building the underlying data source or service from scratch. From the supplied API metadata, the supplied listing identifies apiKey as the authentication method; HTTPS support is listed as available. This makes Api2Convert a useful integration candidate when a project needs online File Conversion API through a programmatic interface. Because API capabilities, quotas, authentication rules, endpoints, and availability can change over time, the provider documentation should be treated as the current technical reference.

Documents & Productivity`apiKey`true
apilayer pdflayer logo

apilayer pdflayer

Documents & Productivity

Free

apilayer pdflayer is an API listed in the Documents & Productivity category that provides access to HTML/URL to PDF. It is intended for developers who want to integrate this type of documents & productivity data or functionality into websites, mobile applications, dashboards, automation workflows, research projects, prototypes, or backend services without building the underlying data source or service from scratch. From the supplied API metadata, the supplied listing identifies apiKey as the authentication method; HTTPS support is listed as available. This makes apilayer pdflayer a useful integration candidate when a project needs HTML/URL to PDF through a programmatic interface. Because API capabilities, quotas, authentication rules, endpoints, and availability can change over time, the provider documentation should be treated as the current technical reference.

Documents & Productivity`apiKey`true
Asana logo

Asana

Documents & Productivity

Free

Asana is an API listed in the Documents & Productivity category that provides access to programmatic access to all data in your asana system. It is intended for developers who want to integrate this type of documents & productivity data or functionality into websites, mobile applications, dashboards, automation workflows, research projects, prototypes, or backend services without building the underlying data source or service from scratch. From the supplied API metadata, the supplied listing identifies apiKey as the authentication method; HTTPS support is listed as available; CORS is listed as Yes. This makes Asana a useful integration candidate when a project needs programmatic access to all data in your asana system through a programmatic interface. Because API capabilities, quotas, authentication rules, endpoints, and availability can change over time, the provider documentation should be treated as the current technical reference.

Documents & Productivity`apiKey`true
BuildPDF logo

BuildPDF

Documents & Productivity

Free

BuildPDF is an API listed in the Documents & Productivity category that provides access to convert HTML, images, and text to PDF. It is intended for developers who want to integrate this type of documents & productivity data or functionality into websites, mobile applications, dashboards, automation workflows, research projects, prototypes, or backend services without building the underlying data source or service from scratch. From the supplied API metadata, the supplied listing identifies apiKey as the authentication method; HTTPS support is listed as available; CORS is listed as Yes. This makes BuildPDF a useful integration candidate when a project needs convert HTML, images, and text to PDF through a programmatic interface. Because API capabilities, quotas, authentication rules, endpoints, and availability can change over time, the provider documentation should be treated as the current technical reference.

Documents & Productivity`apiKey`true
ClickUp logo

ClickUp

Documents & Productivity

Free

ClickUp is an API listed in the Documents & Productivity category that provides access to clickUp is a robust, cloud-based project management tool for boosting productivity. It is intended for developers who want to integrate this type of documents & productivity data or functionality into websites, mobile applications, dashboards, automation workflows, research projects, prototypes, or backend services without building the underlying data source or service from scratch. From the supplied API metadata, the supplied listing identifies OAuth as the authentication method; HTTPS support is listed as available. This makes ClickUp a useful integration candidate when a project needs clickUp is a robust, cloud-based project management tool for boosting productivity through a programmatic interface. Because API capabilities, quotas, authentication rules, endpoints, and availability can change over time, the provider documentation should be treated as the current technical reference.

Documents & Productivity`OAuth`true
Clockify logo

Clockify

Documents & Productivity

Free

Clockify is an API listed in the Documents & Productivity category that provides access to clockify's REST-based API can be used to push/pull data to/from it & integrate it with other systems. It is intended for developers who want to integrate this type of documents & productivity data or functionality into websites, mobile applications, dashboards, automation workflows, research projects, prototypes, or backend services without building the underlying data source or service from scratch. From the supplied API metadata, the supplied listing identifies apiKey as the authentication method; HTTPS support is listed as available. This makes Clockify a useful integration candidate when a project needs clockify's REST-based API can be used to push/pull data to/from it & integrate it with other systems through a programmatic interface. Because API capabilities, quotas, authentication rules, endpoints, and availability can change over time, the provider documentation should be treated as the current technical reference.

Documents & Productivity`apiKey`true
CloudConvert logo

CloudConvert

Documents & Productivity

Free

CloudConvert is an API listed in the Documents & Productivity category that provides access to online file converter for audio, video, document, ebook, archive, image, spreadsheet, presentation. It is intended for developers who want to integrate this type of documents & productivity data or functionality into websites, mobile applications, dashboards, automation workflows, research projects, prototypes, or backend services without building the underlying data source or service from scratch. From the supplied API metadata, the supplied listing identifies apiKey as the authentication method; HTTPS support is listed as available. This makes CloudConvert a useful integration candidate when a project needs online file converter for audio, video, document, ebook, archive, image, spreadsheet, presentation through a programmatic interface. Because API capabilities, quotas, authentication rules, endpoints, and availability can change over time, the provider documentation should be treated as the current technical reference.

Documents & Productivity`apiKey`true
Free

Cloudmersive Document and Data Conversion is an API listed in the Documents & Productivity category that provides access to HTML/URL to PDF/PNG, Office documents to PDF, image conversion. It is intended for developers who want to integrate this type of documents & productivity data or functionality into websites, mobile applications, dashboards, automation workflows, research projects, prototypes, or backend services without building the underlying data source or service from scratch. From the supplied API metadata, the supplied listing identifies apiKey as the authentication method; HTTPS support is listed as available; CORS is listed as Yes. This makes Cloudmersive Document and Data Conversion a useful integration candidate when a project needs HTML/URL to PDF/PNG, Office documents to PDF, image conversion through a programmatic interface. Because API capabilities, quotas, authentication rules, endpoints, and availability can change over time, the provider documentation should be treated as the current technical reference.

Documents & Productivity`apiKey`true
Code::Stats logo

Code::Stats

Documents & Productivity

Free

Code::Stats is an API listed in the Documents & Productivity category that provides access to automatic time tracking for programmers. It is intended for developers who want to integrate this type of documents & productivity data or functionality into websites, mobile applications, dashboards, automation workflows, research projects, prototypes, or backend services without building the underlying data source or service from scratch. From the supplied API metadata, the supplied listing identifies apiKey as the authentication method; HTTPS support is listed as available; CORS is listed as No. This makes Code::Stats a useful integration candidate when a project needs automatic time tracking for programmers through a programmatic interface. Because API capabilities, quotas, authentication rules, endpoints, and availability can change over time, the provider documentation should be treated as the current technical reference.

Documents & Productivity`apiKey`true
CraftMyPDF logo

CraftMyPDF

Documents & Productivity

Free

CraftMyPDF is an API listed in the Documents & Productivity category that provides access to generate PDF documents from templates with a drop-and-drop editor and a simple API. It is intended for developers who want to integrate this type of documents & productivity data or functionality into websites, mobile applications, dashboards, automation workflows, research projects, prototypes, or backend services without building the underlying data source or service from scratch. From the supplied API metadata, the supplied listing identifies apiKey as the authentication method; HTTPS support is listed as available; CORS is listed as No. This makes CraftMyPDF a useful integration candidate when a project needs generate PDF documents from templates with a drop-and-drop editor and a simple API through a programmatic interface. Because API capabilities, quotas, authentication rules, endpoints, and availability can change over time, the provider documentation should be treated as the current technical reference.

Documents & Productivity`apiKey`true
Flowdash logo

Flowdash

Documents & Productivity

Free

Flowdash is an API listed in the Documents & Productivity category that provides access to automate business workflows. It is intended for developers who want to integrate this type of documents & productivity data or functionality into websites, mobile applications, dashboards, automation workflows, research projects, prototypes, or backend services without building the underlying data source or service from scratch. From the supplied API metadata, the supplied listing identifies apiKey as the authentication method; HTTPS support is listed as available. This makes Flowdash a useful integration candidate when a project needs automate business workflows through a programmatic interface. Because API capabilities, quotas, authentication rules, endpoints, and availability can change over time, the provider documentation should be treated as the current technical reference.

Documents & Productivity`apiKey`true
Html2PDF logo

Html2PDF

Documents & Productivity

Free

Html2PDF is an API listed in the Documents & Productivity category that provides access to HTML/URL to PDF. It is intended for developers who want to integrate this type of documents & productivity data or functionality into websites, mobile applications, dashboards, automation workflows, research projects, prototypes, or backend services without building the underlying data source or service from scratch. From the supplied API metadata, the supplied listing identifies apiKey as the authentication method; HTTPS support is listed as available. This makes Html2PDF a useful integration candidate when a project needs HTML/URL to PDF through a programmatic interface. Because API capabilities, quotas, authentication rules, endpoints, and availability can change over time, the provider documentation should be treated as the current technical reference.

Documents & Productivity`apiKey`true
iLovePDF logo

iLovePDF

Documents & Productivity

Free

iLovePDF is an API listed in the Documents & Productivity category that provides access to convert, merge, split, extract text and add page numbers for PDFs. Free for 250 documents/month. It is intended for developers who want to integrate this type of documents & productivity data or functionality into websites, mobile applications, dashboards, automation workflows, research projects, prototypes, or backend services without building the underlying data source or service from scratch. From the supplied API metadata, the supplied listing identifies apiKey as the authentication method; HTTPS support is listed as available; CORS is listed as Yes. This makes iLovePDF a useful integration candidate when a project needs convert, merge, split, extract text and add page numbers for PDFs. Free for 250 documents/month through a programmatic interface. Because API capabilities, quotas, authentication rules, endpoints, and availability can change over time, the provider documentation should be treated as the current technical reference.

Documents & Productivity`apiKey`true
JIRA logo

JIRA

Documents & Productivity

Free

JIRA is an API listed in the Documents & Productivity category that provides access to JIRA is a proprietary issue tracking product that allows bug tracking and agile project management. It is intended for developers who want to integrate this type of documents & productivity data or functionality into websites, mobile applications, dashboards, automation workflows, research projects, prototypes, or backend services without building the underlying data source or service from scratch. From the supplied API metadata, the supplied listing identifies OAuth as the authentication method; HTTPS support is listed as available. This makes JIRA a useful integration candidate when a project needs JIRA is a proprietary issue tracking product that allows bug tracking and agile project management through a programmatic interface. Because API capabilities, quotas, authentication rules, endpoints, and availability can change over time, the provider documentation should be treated as the current technical reference.

Documents & Productivity`OAuth`true
Mattermost logo

Mattermost

Documents & Productivity

Free

Mattermost is an API listed in the Documents & Productivity category that provides access to an open source platform for developer collaboration. It is intended for developers who want to integrate this type of documents & productivity data or functionality into websites, mobile applications, dashboards, automation workflows, research projects, prototypes, or backend services without building the underlying data source or service from scratch. From the supplied API metadata, the supplied listing identifies OAuth as the authentication method; HTTPS support is listed as available. This makes Mattermost a useful integration candidate when a project needs an open source platform for developer collaboration through a programmatic interface. Because API capabilities, quotas, authentication rules, endpoints, and availability can change over time, the provider documentation should be treated as the current technical reference.

Documents & Productivity`OAuth`true
Mercury logo

Mercury

Documents & Productivity

Free

Mercury is an API listed in the Documents & Productivity category that provides access to web parser. It is intended for developers who want to integrate this type of documents & productivity data or functionality into websites, mobile applications, dashboards, automation workflows, research projects, prototypes, or backend services without building the underlying data source or service from scratch. From the supplied API metadata, the supplied listing identifies apiKey as the authentication method; HTTPS support is listed as available. This makes Mercury a useful integration candidate when a project needs web parser through a programmatic interface. Because API capabilities, quotas, authentication rules, endpoints, and availability can change over time, the provider documentation should be treated as the current technical reference.

Documents & Productivity`apiKey`true
Monday logo

Monday

Documents & Productivity

Free

Monday is an API listed in the Documents & Productivity category that provides access to programmatically access and update data inside a monday.com account. It is intended for developers who want to integrate this type of documents & productivity data or functionality into websites, mobile applications, dashboards, automation workflows, research projects, prototypes, or backend services without building the underlying data source or service from scratch. From the supplied API metadata, the supplied listing identifies apiKey as the authentication method; HTTPS support is listed as available. This makes Monday a useful integration candidate when a project needs programmatically access and update data inside a monday.com account through a programmatic interface. Because API capabilities, quotas, authentication rules, endpoints, and availability can change over time, the provider documentation should be treated as the current technical reference.

Documents & Productivity`apiKey`true

Frequently Asked Questions About Free APIs

What are the best free APIs for developers?

The best free APIs include OpenAI API (free tier), GitHub REST API, OpenWeather API, and Alpha Vantage for finance data. Our directory lists hundreds of free APIs across AI, weather, finance, and developer categories.

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Most APIs in our directory offer free tiers that don't require a credit card. Some may require registration for an API key, but you won't be charged for basic usage within their free limits.

How do I integrate these APIs into my project?

Each API listing includes the endpoint URL with a copy button. Click to copy the endpoint, then use it in your HTTP requests. Visit the API's documentation (linked on each page) for authentication details and usage examples.

What's the difference between free and paid API tiers?

Free API tiers typically have rate limits (requests per minute/day) and may offer fewer features. They're perfect for development, testing, and small projects. Paid tiers offer higher limits, more features, and SLAs for production use.

Can I use these APIs for commercial projects?

Most APIs allow commercial use on their free tiers, but check each API's terms of service. Some may require attribution or have specific usage restrictions for commercial applications.