List of free exchangerate-api stuff for developerππ½
If you're looking for all programming tools around exchangerate-api (not just free). Check this page List of exchangerate-api Programming Tools

ForexRateAPI
Free API for Real Time and historical foreign exchange (FOREX) rates for your business.
Tag: API, exchangerate-api
Free 100 Req/mo

MetalpriceAPI
MetalpriceAPI is a free and easy-to-use API for live and historical precious metals and foreign exchange rates.
Tag: API, exchangerate-api
Free 100 Req/mo

ExchangeRate-API
ExchangeRate-API is a free & Pro currency conversion API for getting the latest foreign exchange rates in an easy to use JSON format.
Tag: API, exchangerate-api
Open Access: Rate Limited API Key: 1 500 API requests p/m 24 Hour Data Updates