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 97-144 of 1467 APIs
Walltime
Blockchain
Walltime is an API listed in the Blockchain category that provides access to to retrieve Walltime's market info. It is intended for developers who want to integrate this type of blockchain 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 Walltime a useful integration candidate when a project needs to retrieve Walltime's market info 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.
Watchdata
Blockchain
Watchdata is an API listed in the Blockchain category that provides access to provide simple and reliable API access to Ethereum blockchain. It is intended for developers who want to integrate this type of blockchain 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 Watchdata a useful integration candidate when a project needs provide simple and reliable API access to Ethereum blockchain 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.
A Bíblia Digital
Books
A Bíblia Digital is an API listed in the Books category that provides access to do not worry about managing the multiple versions of the Bible. It is intended for developers who want to integrate this type of books 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 A Bíblia Digital a useful integration candidate when a project needs do not worry about managing the multiple versions of the Bible 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.
Amanah Sunnah
Books
Amanah Sunnah is an API listed in the Books category that provides access to semantic search across Quran, Hadith, Tafsir & 18K+ Rijal narrators. It is intended for developers who want to integrate this type of books 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 Amanah Sunnah a useful integration candidate when a project needs semantic search across Quran, Hadith, Tafsir & 18K+ Rijal narrators 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.
Bhagavad Gita
Books
Bhagavad Gita is an API listed in the Books category that provides access to open Source Shrimad Bhagavad Gita API including 21+ authors translation in Sanskrit/English/Hindi. It is intended for developers who want to integrate this type of books 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 Bhagavad Gita a useful integration candidate when a project needs open Source Shrimad Bhagavad Gita API including 21+ authors translation in Sanskrit/English/Hindi 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.
Bhagavad Gita telugu
Books
Bhagavad Gita telugu is an API listed in the Books category that provides access to bhagavad Gita API in telugu and odia languages. It is intended for developers who want to integrate this type of books 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 Bhagavad Gita telugu a useful integration candidate when a project needs bhagavad Gita API in telugu and odia 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.
Bible-api
Books
Bible-api is an API listed in the Books category that provides access to free Bible API with multiple languages. It is intended for developers who want to integrate this type of books 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 Bible-api a useful integration candidate when a project needs free Bible API with multiple 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.
British National Bibliography is an API listed in the Books category that provides access to books. It is intended for developers who want to integrate this type of books 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 British National Bibliography a useful integration candidate when a project needs books 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.
Crossref Metadata Search is an API listed in the Books category that provides access to books & Articles Metadata. It is intended for developers who want to integrate this type of books 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 Crossref Metadata Search a useful integration candidate when a project needs books & Articles Metadata 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.
Ganjoor
Books
Ganjoor is an API listed in the Books category that provides access to classic Persian poetry works including access to related manuscripts, recitations and music tracks. It is intended for developers who want to integrate this type of books 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 Ganjoor a useful integration candidate when a project needs classic Persian poetry works including access to related manuscripts, recitations and music tracks 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.
Google Books
Books
Google Books is an API listed in the Books category that provides access to books. It is intended for developers who want to integrate this type of books 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 Books a useful integration candidate when a project needs books 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.
GurbaniNow
Books
GurbaniNow is an API listed in the Books category that provides access to fast and Accurate Gurbani RESTful API. It is intended for developers who want to integrate this type of books 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 GurbaniNow a useful integration candidate when a project needs fast and Accurate Gurbani RESTful 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.
Gutendex
Books
Gutendex is an API listed in the Books category that provides access to web-API for fetching data from Project Gutenberg Books Library. It is intended for developers who want to integrate this type of books 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 Gutendex a useful integration candidate when a project needs web-API for fetching data from Project Gutenberg Books Library 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.
Open Library
Books
Open Library is an API listed in the Books category that provides access to books, book covers and related data. It is intended for developers who want to integrate this type of books 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 Open Library a useful integration candidate when a project needs books, book covers and related 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.
Penguin Publishing
Books
Penguin Publishing is an API listed in the Books category that provides access to books, book covers and related data. It is intended for developers who want to integrate this type of books 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 Penguin Publishing a useful integration candidate when a project needs books, book covers and related 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.
PoetryDB
Books
PoetryDB is an API listed in the Books category that provides access to enables you to get instant data from our vast poetry collection. It is intended for developers who want to integrate this type of books 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 PoetryDB a useful integration candidate when a project needs enables you to get instant data from our vast poetry collection 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.
Quran
Books
Quran is an API listed in the Books category that provides access to rESTful Quran API with multiple languages. It is intended for developers who want to integrate this type of books 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 Quran a useful integration candidate when a project needs rESTful Quran API with multiple 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.
Quran Cloud
Books
Quran Cloud is an API listed in the Books category that provides access to a RESTful Quran API to retrieve an Ayah, Surah, Juz or the entire Holy Quran. It is intended for developers who want to integrate this type of books 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 Quran Cloud a useful integration candidate when a project needs a RESTful Quran API to retrieve an Ayah, Surah, Juz or the entire Holy Quran 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.
Quran-api
Books
Quran-api is an API listed in the Books category that provides access to free Quran API Service with 90+ different languages and 400+ translations. It is intended for developers who want to integrate this type of books 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 Quran-api a useful integration candidate when a project needs free Quran API Service with 90+ different languages and 400+ translations 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.
Rig Veda
Books
Rig Veda is an API listed in the Books category that provides access to gods and poets, their categories, and the verse meters, with the mandal and sukta number. It is intended for developers who want to integrate this type of books 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 Rig Veda a useful integration candidate when a project needs gods and poets, their categories, and the verse meters, with the mandal and sukta number 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.
Runyankole Bible
Books
Runyankole Bible is an API listed in the Books category that provides access to free REST API for the Runyankore-Rukiga Bible — 66 books, 31106 verses. It is intended for developers who want to integrate this type of books 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 Runyankole Bible a useful integration candidate when a project needs free REST API for the Runyankore-Rukiga Bible — 66 books, 31106 verses 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.
The Bible
Books
The Bible is an API listed in the Books category that provides access to everything you need from the Bible in one discoverable place. It is intended for developers who want to integrate this type of books 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 The Bible a useful integration candidate when a project needs everything you need from the Bible in one discoverable place 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.
Thirukkural
Books
Thirukkural is an API listed in the Books category that provides access to 1330 Thirukkural poems and explanation in Tamil and English. It is intended for developers who want to integrate this type of books 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 Thirukkural a useful integration candidate when a project needs 1330 Thirukkural poems and explanation in Tamil and English 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.
Urantia Papers
Books
Urantia Papers is an API listed in the Books category that provides access to full-text + semantic search across the Urantia Papers, with audio narration, entities, translations. It is intended for developers who want to integrate this type of books 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 Urantia Papers a useful integration candidate when a project needs full-text + semantic search across the Urantia Papers, with audio narration, entities, translations 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.
Vedic Society
Books
Vedic Society is an API listed in the Books category that provides access to descriptions of all nouns (names, places, animals, things) from vedic literature. It is intended for developers who want to integrate this type of books 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 Vedic Society a useful integration candidate when a project needs descriptions of all nouns (names, places, animals, things) from vedic literature 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.
Wizard World
Books
Wizard World is an API listed in the Books category that provides access to get information from the Harry Potter universe. It is intended for developers who want to integrate this type of books 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 Wizard World a useful integration candidate when a project needs get information from the Harry Potter universe 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.
Wolne Lektury
Books
Wolne Lektury is an API listed in the Books category that provides access to API for obtaining information about e-books available on the WolneLektury.pl website. It is intended for developers who want to integrate this type of books 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 Wolne Lektury a useful integration candidate when a project needs API for obtaining information about e-books available on the WolneLektury.pl 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.
Apache Superset
Business
Apache Superset is an API listed in the Business category that provides access to API to manage your BI dashboards and data sources on Superset. It is intended for developers who want to integrate this type of business 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 Apache Superset a useful integration candidate when a project needs API to manage your BI dashboards and data sources on Superset 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.
Clearbit Logo
Business
Clearbit Logo is an API listed in the Business category that provides access to search for company logos and embed them in your projects. It is intended for developers who want to integrate this type of business 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 Clearbit Logo a useful integration candidate when a project needs search for company logos and embed them in your 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.
Google Analytics
Business
Collect, configure and analyze your data to reach the right audience
Instatus
Business
Post to and update maintenance and incidents on your status page through an HTTP REST API
mailjet
Business
Marketing email can be sent and mail templates made in MJML or HTML can be sent using API
Smartsheet
Business
Allows you to programmatically access and Smartsheet data and account information
Square
Business
Easy way to take payments, manage refunds, and help customers checkout online
SwiftKanban
Business
Kanban software, Visualize Work, Increase Organizations Lead Time, Throughput & Productivity
Tomba email finder
Business
Email Finder for B2B sales and email marketing and email verifier
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.