A powerful collection of 100+ APIs across categories to help you build apps, tools, and projects. From AI to finance, weather to music, this list has it all!
🔥 Featured pick: ROIC.ai ( @vladcx ) — a REST API (and MCP server) that gives you clean, standardized financial statements, ratios, valuation multiples, stock prices, and earnings call transcripts for 60,000+ public companies across 70+ global exchanges. Unlike single-source feeds like Yahoo Finance, ROIC.ai pre-computes ratios and multiples so you get comparable numbers instead of scraped tables — great for fintech apps, investing tools, and AI agents that need reliable company data. Free tier available, no credit card required. See the docs →
📚 Table of Contents
- Public APIs for Open Data 🌍
- Weather APIs ☁️
- News APIs 📰
- Finance & Cryptocurrency APIs 💰
- AI & NLP APIs 🤖
- Health APIs 🏥
- Food & Recipe APIs 🍔
- Image & Video APIs 🖼️
- Social Media APIs 📱
- Entertainment APIs 🎮
- Developer Tools APIs 🛠️
- Music APIs 🎵
- E-Commerce APIs 🛒
- Education APIs 🎓
- Sports APIs ⚽
🌍 1. Public APIs for Open Data
| API Name | Description | Link |
|---|---|---|
| OpenStreetMap 🌐 | Open map data for geolocation. | OpenStreetMap API |
| NASA API 🚀 | Space data, images, and mission information. | NASA API |
| Data.gov 📊 | U.S. government open datasets. | Data.gov |
| World Bank API 🌏 | Economic and country-level data. | World Bank API |
| UN Data API 🌎 | Access global development data. | UN Data |
| CovidActNow API 🦠 | COVID-19 risk and vaccine data. | CovidActNow API |
| GeoNames API 🗺️ | Geographic location and postal data. | GeoNames API |
| Open Library API 📚 | Books, covers, and library metadata. | Open Library |
☁️ 2. Weather APIs
| API Name | Description | Link |
|---|---|---|
| OpenWeatherMap 🌦️ | Weather data and forecasts. | OpenWeatherMap |
| WeatherAPI 🌩️ | Real-time weather and historical data. | WeatherAPI |
| Storm Glass API 🌊 | Marine and coastal weather data. | Storm Glass |
| Visual Crossing 🌤️ | Historical weather and analytics. | Visual Crossing |
| Weatherbit API ⛅ | Forecasts and real-time data. | Weatherbit |
📰 3. News APIs
| API Name | Description | Link |
|---|---|---|
| NewsAPI 📰 | Aggregates news headlines globally. | NewsAPI |
| GNews API 🌍 | Real-time global news updates. | GNews API |
| The Guardian API 📰 | Access The Guardian's articles and content. | The Guardian API |
| Currents API 🔥 | Breaking news and trending stories. | Currents API |
| New York Times API 🗞 | Fetch NYT articles, archives, and metadata. | NYT API |
💰 4. Finance & Cryptocurrency APIs
| API Name | Description | Link |
|---|---|---|
| ROIC.ai API 💎 | Financial statements, ratios, valuation multiples, stock prices, and earnings call transcripts for 60,000+ public companies across 70+ exchanges. Also ships as an MCP server for AI assistants. | ROIC.ai API |
| CoinGecko API 🪙 | Crypto market and exchange data. | CoinGecko |
| Alpha Vantage 📈 | Stock and forex data. | Alpha Vantage |
| Fixer API 💱 | Foreign exchange rates. | Fixer API |
| Nomics API 🔐 | Crypto asset prices and information. | Nomics API |
| Finnhub API 📊 | Stock API for real-time financial data. | Finnhub API |
🤖 5. AI & NLP APIs
| API Name | Description | Link |
|---|---|---|
| OpenAI API 🧠 | Access GPT models for text generation. | OpenAI API |
| DeepAI 🤖 | AI-powered tools for analysis and generation. | DeepAI |
| Wit.ai 🗣️ | NLP for building voice apps. | Wit.ai |
| TensorFlow.js ⚙️ | JavaScript AI models and training. | TensorFlow.js |
| Clarifai API 🖼️ | AI for image recognition and tagging. | Clarifai API |
🎓 14. Education APIs
| API Name | Description | Link |
|---|---|---|
| Khan Academy API 📚 | Access learning resources and videos. | Khan Academy |
| OpenAI Datasets 📖 | Learning datasets for AI and development. | OpenAI |
| Edamam API 📘 | Nutrition and education content. | Edamam API |
| RestCountries 🌍 | Get country details for education. | RestCountries API |
| Google Books API 📚 | Search books and retrieve data. | Google Books |
⚽ 15. Sports APIs
| API Name | Description | Link |
|---|---|---|
| Football-Data.org ⚽ | Football and league data. | Football Data |
| TheSportsDB API 🎽 | Sports teams, players, and scores. | TheSportsDB |
| NBA API 🏀 | Stats and information for NBA games. | NBA API |
| Api-Football ⚽ | Live scores and football updates. | API Football |
| ESPN API 📺 | Sports data for major events. | ESPN API |
🎁 More Free APIs
- NASA API — Access data related to space exploration such as images and videos. NASA API
- Open Trivia Database API — Get trivia questions across multiple categories, perfect for quiz apps. OpenTDB API
- TimeZoneDB — Fetch time zone data for any region in the world. TimeZoneDB API
- Unsplash API — Access a library of high-quality images, free to use. Unsplash API
- QR Code Generator API — Generate QR codes easily for any kind of data. QR API
- Advice Slip API — Fetch random pieces of advice, great for fun apps. Advice Slip API
- Brevo API — Build your own SMS, email campaign, and mail-sending system, with free APIs for secure forms. Brevo API
- Marvel API — Access Marvel Comics data including characters, series, and more. Marvel API
- Giphy API — Get access to thousands of GIFs and stickers to integrate into your app. Giphy API
- Dictionary API — Access word definitions, antonyms, and more. Dictionary API
- OCR Space API — Optical character recognition to extract text from documents and images. OCR API
- Foursquare API — Access location data and user-generated content from Foursquare. Foursquare API
- Telegram Bot API — Create bots for the Telegram messaging platform. Telegram Bot API
- Slack API — Build apps for communication and team collaboration. Slack API
- Wolfram Alpha API — Access knowledge and computational data from Wolfram Alpha. Wolfram Alpha API
- Open Library API — Access metadata for millions of books and authors worldwide. Open Library API
- Oxford Dictionary API — Access word definitions and synonyms. Oxford Dictionary API
- URLScan API — Scan and analyze URLs for phishing, malware, or other security risks. URLScan API
- Free Forex API — Get real-time forex rates and cryptocurrency exchange rates. Free Forex API
- Sunrise-Sunset API — Fetch sunrise and sunset times for any location in the world. Sunrise Sunset API
- Link Preview API — Fetch information for a URL such as title, description, and images for embedding. Link Preview API
- Fun Translations API — Translate text into fun languages like Yoda-speak. Fun Translations API
🎉 Wrapping Up
With 100+ APIs across categories — including standouts like ROIC.ai for real financial and stock market data — you're ready to build projects, apps, and tools with real-world data. If your project touches company financials, valuations, or earnings data, ROIC.ai's free tier is worth starting with before reaching for a paid provider. Start integrating these today and watch your development workflow supercharge! 🚀
Which API will you try first? Share in the comments! 👇
Top comments (61)
Sso this is really clickbaiting.
The problem is even that the work done is degraded by the expectation of finding xyz. The catchy number “100” is not really the problem. At the latest when you are disappointed with the unfinished table of contents, it is a waste of life time.
In my case, I was looking forward to the Music APIs and was disappointed.
Honestly, this is not the level I expect on this site. Then you should have the guts to change the headline to “Constantly growing list of free APIs”, “Hopefully there's something for you too, just come back often - list of APIs”.
You should check Vratix - it is not an API but it helps you set up new Node.js backend services in seconds. We will be adding some API Modules that integrate some of the APIs you shared.
Hey i add more apis in this post now
There was less than 100 API s
Health APIs 🏥
Food & Recipe APIs 🍔
Image & Video APIs 🖼️
Social Media APIs 📱
Entertainment APIs 🎮
Developer Tools APIs 🛠️
Music APIs 🎵
E-Commerce APIs 🛒
Education APIs 🎓
Sports APIs
I guess ChatGPT failed with its output here, missing most of the list, and author didn't bother to check the output before posting it.
Hey i add more apis in this post now
😁
Hey i add more apis in this post now
I think you misspelled "thank you".
Add Pulsetic API for website monitoring to the list.
Hey i add more apis in this post now
Ok
There are the more Apis such as
Unsplash Api for images fetching
Pexel Api for the Images fetching
Pixabay images and videos
This is very informative. Learned about a lot of new APIs.
Selfless plug: if anyone like to spin up a RESTful API online - checkout Hoppscotch.io - helps to make requests directly from the browser.
Open source API development ecosystem - https://hoppscotch.io (open-source alternative to Postman, Insomnia)
Awesome!
👍
Hey i add more apis in this post now
thanks man, really helpful
Hey i add more apis in this post now
Thanks
Thanks for sharing this.
And There is the AssemblyAI API key for voice to text converter
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