There are 2 repositories under fiat-money topic.
Foreign exchange rates
A lightweight currency converter with over 40 currencies supports (including cryptocurrencies).
BitUniverse | Cryptocurrency Portfolio & Bitcoin Trading Bot
THONG NGO
Cryptocurrency exchange rates tracker
4 years ago I was tired of calculating my crypto assets into the corresponding estimated value in fiat-money (EUR) or BTC and made this tool during a lecture about HR management. Deployed it to an Azure App Service to check my assets from everywhere and everytime.
Blockchain.com-THONGNGO
THONG NGO Bitcoin Wallet