API Ninjas
Collection of production-ready data APIs with a free API key
12 tools like APILayer, chosen by what they do. About APILayer

Collection of production-ready data APIs with a free API key

Stock market, forex and crypto data API with a free API key

Free weather forecast and historical weather API with no API key

Currency exchange rate API for 165 currencies with a free plan

Weather, forecast and air quality APIs with a free daily tier

Free fake REST API with six resources and no signup required

Simple HTTP service that echoes requests and returns test responses

Free hosted REST API for testing and prototyping with real responses



Country data API with 250+ countries and 90+ fields per record

Free exchange rate API for 219 currencies, with history back to 1948