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.
Kantox - Kantox is a fintech company offering FX management solutions.
FXRatesAPI - Your Gateway to Real-Time Exchange Rates
FxPro - FxPro offers web and mobile based online trading platforms and tools.
Freecurrencyapi.com - Freecurrencyapi.com is a free, reliable & feature-complete currency exchange rates API. 32 world currencies & daily update rates.
Exchange on Net - Access business email, calendar, and contacts on your PC, phone, and web browser with Exchange Online. Hosted email that’s easy to use and easy to manage.