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 289-336 of 1467 APIs

Blague.xyz logo

Blague.xyz

Development

Free

Blague.xyz is an API listed in the Development category that provides access to la plus grande API de Blagues FR/The biggest FR jokes 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 Blague.xyz a useful integration candidate when a project needs la plus grande API de Blagues FR/The biggest FR jokes 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
Blitapp logo

Blitapp

Development

Free

Blitapp is an API listed in the Development category that provides access to schedule screenshots of web pages and sync them to your cloud. 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 Blitapp a useful integration candidate when a project needs schedule screenshots of web pages and sync them to your cloud 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
Blynk-Cloud logo

Blynk-Cloud

Development

Free

Blynk-Cloud is an API listed in the Development category that provides access to control IoT Devices from Blynk IoT Cloud. 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 unavailable. This makes Blynk-Cloud a useful integration candidate when a project needs control IoT Devices from Blynk IoT Cloud 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`false
Bored logo

Bored

Development

Free

Bored is an API listed in the Development category that provides access to find random activities to fight boredom. 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 Bored a useful integration candidate when a project needs find random activities to fight boredom 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
Brainshop.ai logo

Brainshop.ai

Development

Free

Brainshop.ai is an API listed in the Development category that provides access to make A Free A.I Brain. 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 Brainshop.ai a useful integration candidate when a project needs make A Free A.I Brain 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
BrewPage logo

BrewPage

Development

Free

BrewPage is an API listed in the Development category that provides access to free hosting for HTML, JSON, key-value, files, multi-file sites with short URLs and TTL retention. 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 BrewPage a useful integration candidate when a project needs free hosting for HTML, JSON, key-value, files, multi-file sites with short URLs and TTL retention 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
Browshot logo

Browshot

Development

Free

Browshot is an API listed in the Development category that provides access to easily make screenshots of web pages in any screen size, as any device. 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 Browshot a useful integration candidate when a project needs easily make screenshots of web pages in any screen size, as any device 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
CDNJS logo

CDNJS

Development

Free

CDNJS is an API listed in the Development category that provides access to library info on CDNJS. 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 CDNJS a useful integration candidate when a project needs library info on CDNJS 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
Changelogs.md logo

Changelogs.md

Development

Free

Changelogs.md is an API listed in the Development category that provides access to structured changelog metadata from open source projects. 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 Changelogs.md a useful integration candidate when a project needs structured changelog metadata from open source projects 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
Ciprand logo

Ciprand

Development

Free

Ciprand is an API listed in the Development category that provides access to secure random string generator. 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 Ciprand a useful integration candidate when a project needs secure random string generator 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
Cloudflare Trace logo

Cloudflare Trace

Development

Free

Cloudflare Trace is an API listed in the Development category that provides access to get IP Address, Timestamp, User Agent, Country Code, IATA, HTTP Version, TLS/SSL Version & More. 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 Cloudflare Trace a useful integration candidate when a project needs get IP Address, Timestamp, User Agent, Country Code, IATA, HTTP Version, TLS/SSL Version & More 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
Codex logo

Codex

Development

Free

Codex is an API listed in the Development category that provides access to online Compiler for Various Languages. 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 Codex a useful integration candidate when a project needs online Compiler for Various Languages 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
Free

Contentful Images is an API listed in the Development category that provides access to used to retrieve and apply transformations to images. 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 Contentful Images a useful integration candidate when a project needs used to retrieve and apply transformations to images 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
CORS Proxy logo

CORS Proxy

Development

Free

CORS Proxy is an API listed in the Development category that provides access to get around the dreaded CORS error by using this proxy as a middle man. 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 CORS Proxy a useful integration candidate when a project needs get around the dreaded CORS error by using this proxy as a middle man 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
CountAPI logo

CountAPI

Development

Free

CountAPI is an API listed in the Development category that provides access to free and simple counting service. You can use it to track page hits and specific events. 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 CountAPI a useful integration candidate when a project needs free and simple counting service. You can use it to track page hits and specific events 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
Databricks logo

Databricks

Development

Free

Databricks is an API listed in the Development category that provides access to service to manage your databricks account,clusters, notebooks, jobs and workspaces. 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 Databricks a useful integration candidate when a project needs service to manage your databricks account,clusters, notebooks, jobs and workspaces 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

DigitalOcean Status is an API listed in the Development category that provides access to status of all DigitalOcean services. 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 DigitalOcean Status a useful integration candidate when a project needs status of all DigitalOcean services 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
Docker Hub logo

Docker Hub

Development

Free

Docker Hub is an API listed in the Development category that provides access to interact with Docker Hub. 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 Docker Hub a useful integration candidate when a project needs interact with Docker Hub 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
DomainDb Info logo

DomainDb Info

Development

Free

DomainDb Info is an API listed in the Development category that provides access to domain name search to find all domains containing particular words/phrases/etc. 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 DomainDb Info a useful integration candidate when a project needs domain name search to find all domains containing particular words/phrases/etc 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

ExtendsClass JSON Storage is an API listed in the Development category that provides access to a simple JSON store 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 ExtendsClass JSON Storage a useful integration candidate when a project needs a simple JSON store 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
GeekFlare logo

GeekFlare

Development

Free

GeekFlare is an API listed in the Development category that provides access to provide numerous capabilities for important testing and monitoring methods for websites. 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 GeekFlare a useful integration candidate when a project needs provide numerous capabilities for important testing and monitoring methods for websites 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
Genderize.io logo

Genderize.io

Development

Free

Genderize.io is an API listed in the Development category that provides access to estimates a gender from a first name. 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 Genderize.io a useful integration candidate when a project needs estimates a gender from a first name 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
GETPing logo

GETPing

Development

Free

GETPing is an API listed in the Development category that provides access to trigger an email notification with a simple GET request. 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 GETPing a useful integration candidate when a project needs trigger an email notification with a simple GET request 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
Ghost logo

Ghost

Development

Free

Ghost is an API listed in the Development category that provides access to get Published content into your Website, App or other embedded media. 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 Ghost a useful integration candidate when a project needs get Published content into your Website, App or other embedded media 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
GitHub logo

GitHub

Development

Free

GitHub is an API listed in the Development category that provides access to make use of GitHub repositories, code and user info programmatically. 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; CORS is listed as Yes. This makes GitHub a useful integration candidate when a project needs make use of GitHub repositories, code and user info programmatically 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
Gitlab logo

Gitlab

Development

Free

Gitlab is an API listed in the Development category that provides access to automate GitLab interaction programmatically. 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 Gitlab a useful integration candidate when a project needs automate GitLab interaction programmatically 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
Gitter logo

Gitter

Development

Free

Gitter is an API listed in the Development category that provides access to chat 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 Gitter a useful integration candidate when a project needs chat 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
Glitterly logo

Glitterly

Development

Free

Glitterly is an API listed in the Development category that provides access to image generation 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 Glitterly a useful integration candidate when a project needs image generation 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
Google Docs logo

Google Docs

Development

Free

Google Docs is an API listed in the Development category that provides access to API to read, write, and format Google Docs documents. 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 Google Docs a useful integration candidate when a project needs API to read, write, and format Google Docs documents 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
Google Firebase logo

Google Firebase

Development

Free

Google Firebase is an API listed in the Development category that provides access to google's mobile application development platform that helps build, improve, and grow app. 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 Google Firebase a useful integration candidate when a project needs google's mobile application development platform that helps build, improve, and grow app 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
Google Fonts logo

Google Fonts

Development

Free

Google Fonts is an API listed in the Development category that provides access to metadata for all families served by Google Fonts. 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 Google Fonts a useful integration candidate when a project needs metadata for all families served by Google Fonts 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
Google Keep logo

Google Keep

Development

Free

Google Keep is an API listed in the Development category that provides access to API to read, write, and format Google Keep notes. 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 Google Keep a useful integration candidate when a project needs API to read, write, and format Google Keep notes 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
Google Sheets logo

Google Sheets

Development

Free

Google Sheets is an API listed in the Development category that provides access to API to read, write, and format Google Sheets data. 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 Google Sheets a useful integration candidate when a project needs API to read, write, and format Google Sheets 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.

Development`OAuth`true
Google Slides logo

Google Slides

Development

Free

Google Slides is an API listed in the Development category that provides access to API to read, write, and format Google Slides presentations. 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 Google Slides a useful integration candidate when a project needs API to read, write, and format Google Slides presentations 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
Gorest logo

Gorest

Development

Free

Gorest is an API listed in the Development category that provides access to online REST API for Testing and Prototyping. 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 Gorest a useful integration candidate when a project needs online REST API for Testing and Prototyping 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
Hasura logo

Hasura

Development

Free

Hasura is an API listed in the Development category that provides access to graphQL and REST API Engine with built in Authorization. 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 Hasura a useful integration candidate when a project needs graphQL and REST API Engine with built in Authorization 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
Heroku logo

Heroku

Development

Free

Heroku is an API listed in the Development category that provides access to REST API to programmatically create apps, provision add-ons and perform other task on Heroku. 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; CORS is listed as Yes. This makes Heroku a useful integration candidate when a project needs REST API to programmatically create apps, provision add-ons and perform other task on Heroku 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
host-t.com logo

host-t.com

Development

Free

host-t.com is an API listed in the Development category that provides access to basic DNS query via HTTP GET request. 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 host-t.com a useful integration candidate when a project needs basic DNS query via HTTP GET request 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
Host.io logo

Host.io

Development

Free

Host.io is an API listed in the Development category that provides access to domains Data API 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 apiKey as the authentication method; HTTPS support is listed as available; CORS is listed as Yes. This makes Host.io a useful integration candidate when a project needs domains Data API 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`apiKey`true
HTTP2.Pro logo

HTTP2.Pro

Development

Free

HTTP2.Pro is an API listed in the Development category that provides access to test endpoints for client and server HTTP/2 protocol support. 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 HTTP2.Pro a useful integration candidate when a project needs test endpoints for client and server HTTP/2 protocol support 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
Httpbin logo

Httpbin

Development

Free

Httpbin is an API listed in the Development category that provides access to a Simple HTTP Request & Response 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 available; CORS is listed as Yes. This makes Httpbin a useful integration candidate when a project needs a Simple HTTP Request & Response 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.

DevelopmentNotrue
Free

Httpbin Cloudflare is an API listed in the Development category that provides access to a Simple HTTP Request & Response Service with HTTP/3 Support by Cloudflare. 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 Httpbin Cloudflare a useful integration candidate when a project needs a Simple HTTP Request & Response Service with HTTP/3 Support by Cloudflare 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
Hunter logo

Hunter

Development

Free

Hunter is an API listed in the Development category that provides access to API for domain search, professional email finder, author finder and email verifier. 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 Hunter a useful integration candidate when a project needs API for domain search, professional email finder, author finder and email verifier 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

IBM Text to Speech is an API listed in the Development category that provides access to convert text to speech. 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 IBM Text to Speech a useful integration candidate when a project needs convert text to speech 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
Icanhazepoch logo

Icanhazepoch

Development

Free

Icanhazepoch is an API listed in the Development category that provides access to get Epoch time. 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 Icanhazepoch a useful integration candidate when a project needs get Epoch time 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
Icanhazip logo

Icanhazip

Development

Free

Icanhazip is an API listed in the Development category that provides access to IP Address 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 Icanhazip a useful integration candidate when a project needs IP Address 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
IFTTT logo

IFTTT

Development

Free

IFTTT is an API listed in the Development category that provides access to IFTTT Connect 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. This makes IFTTT a useful integration candidate when a project needs IFTTT Connect 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
Image-Charts logo

Image-Charts

Development

Free

Image-Charts is an API listed in the Development category that provides access to generate charts, QR codes and graph images. 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 Image-Charts a useful integration candidate when a project needs generate charts, QR codes and graph images 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

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.

Do these APIs require a credit card?

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.