List Of free and useful Api
Currency Converter API https://rapidapi.com/natkapral/api/currency-converter5/
Marvel API https://developer.marvel.com/
Infura Ethereum API https://infura.io/dashboard/ethereum/
CoinGecko API https://www.coingecko.com/en/api
FakeStore API https://fakestoreapi.com/
Weathermap API https://openweathermap.org/api
Digital Recipe Book API https://www.edamam.com/
News API https://newsapi.org/