exchange rate chart

Demo account
https://www.forex.com/en-us/

USD to international
https://finance.yahoo.com/cryptocurrencies?offset=0&count=100

international to USD
http://mnb.hu/en/arfolyamok

http://www.rate.am/en/international-rates

http://www.currency-table.com/en/app-currencytable.html

https://freecurrencyrates.com/en/#EUR;USD;1;;fcr

https://www.programmableweb.com/category/financial/api