ExchangeRate-API.com offers an easy-to-use JSON currency conversion API with unlimited free requests. The service supports all 160 major currency codes and an incredibly accessible API request format. ExchangeRate-API has been a popular option for developers to get exchange rate data since 2010!
No features have been listed yet.
Fixer.io - Fixer provides a free, simple, and lightweight API for current and historical foreign exchange rates and currency conversion. The API tracks rates published daily by the European Central Bank.
FXPlus - Forex Exchange and Trading
exchangeratesapi.io - Foreign exchange rates API with currency conversion.
mbox - Mbox is the based on the technology of sandbox and is primarily deployed for the purpose of configuration or carry on those activities on the system that are suspicious are in nature.
Open Exchange Rates - Free, hourly-updated exchange rates - a simple, accurate, open-source JSON API. Free for personal use, a bargain for everybody else.
CurrencyXchanger - Currency Exchange Software for Money Service Businesses