Free APIs with CORS Enabled
Public developer APIs that support cross-origin requests right from client-side React, Vue, Svelte, or vanilla browser applications without server proxies.
Overview & Comparison Matrix
50 Endpoints| API Name | Category | Auth Status | Rate Limit | Action |
|---|---|---|---|---|
| Open-Meteo | weather | No Key | Sınırsız | View API |
| OpenWeatherMap | weather | Free Key | 1000 çağrı/gün | View API |
| WeatherAPI | weather | Free Key | 1M çağrı/ay | View API |
| Visual Crossing | weather | Free Key | 1000 çağrı/gün | View API |
| Tomorrow.io | weather | Free Key | 500 çağrı/gün | View API |
| Meteostat | weather | Free Key | Değişken | View API |
| AccuWeather | weather | Free Key | 50 çağrı/gün | View API |
| Weatherbit | weather | Free Key | 500 çağrı/gün | View API |
| Weatherstack | weather | Free Key | 250 istek/ay | View API |
| World Weather Online | weather | Free Key | 500 çağrı/gün | View API |
All Verified Endpoints(24 / 50)
Open-Meteo
Zero authentication required, completely free, 16-day forecast, unlimited requests
OpenWeatherMap
7-day weather forecast, current conditions, and historical records
WeatherAPI
Comprehensive real-time weather and astronomical datasets
Visual Crossing
50-year historical weather records and global meteorological forecasts
Tomorrow.io
Advanced hyperlocal weather intelligence, wind vectors, and alert feeds
Meteostat
Open meteorological historical weather data archive and climate trends
AccuWeather
Enterprise-grade weather forecasts and high-resolution radar feeds
Weatherbit
High-resolution historical and current weather and solar telemetry
Weatherstack
Real-time global weather and geolocation lookup engine
World Weather Online
Global worldwide weather, marine, and ski resort forecasting
NOAA (ABD Hava Servisi)
Official US National Weather Service open API, zero key needed
Yr.no (Norveç)
Norwegian Meteorological Institute open public weather feeds
AirVisual
Global real-time air quality index (AQI) and pollution sensor datasets
OpenAQ
Global community air quality open environmental data platform
CoinGecko
Zero authentication required, comprehensive crypto market datasets
CoinCap
Real-time crypto market cap, exchange volume, and live pricing feeds
CoinMarketCap
Industry-leading cryptocurrency index and market valuations
CoinPaprika
100% free crypto price ticker and decentralized token analytics
CoinLore
Free cryptocurrency market data, coin list and global trading volume
CryptoCompare
Comprehensive crypto market streaming and historical pricing analytics
Binance API
Official Binance spot, futures, and real-time market depth endpoints
Coinbase API
US largest regulated crypto exchange developer API endpoints
Etherscan
Ethereum blockchain explorer, smart contract telemetry and gas tracker
Frequently Asked Questions & Developer Guide
What is CORS and why does it matter for frontend APIs?
Cross-Origin Resource Sharing (CORS) allows web applications in a browser to make XMLHttpRequests / fetch calls to other domains. APIs with CORS enabled do not require a separate backend proxy.
What should I do if an API throws a CORS error?
You can proxy the call through FreeAPI Smart Edge Gateway to automatically receive normalized Access-Control-Allow-Origin headers with high-speed memory caching.