Finance
Currencies, market data, macroeconomic indicators.
Frankfurter
European Central Bank (community)Exchange rates published by the European Central Bank, no key required.
no keyjsonCoinGecko
CoinGeckoCryptocurrency prices, market caps and exchanges. Generous free tier.
no keyjsonWorld Bank Indicators
The World BankGlobal economic, social and environmental indicators for every country.
no keyjsonMempool.space
Mempool Open Source ProjectBitcoin blockchain explorer API. Blocks, transactions and fees in real time.
no keyjsonFrankfurter history
European Central Bank (community)Historical exchange rate series from the ECB, ideal for time series charts.
no keyjson