CoinGecko API alternatives
10 other financial data listed here. CoinGecko API is freemium.
Alpha Vantage Featured
Stock, forex and crypto data through a REST API
EOD Historical Data
Historical and live market data for global exchanges
Financial Modeling Prep
Prices, statements and ratios through a REST API
Finnhub
Real-time quotes, fundamentals and news
FRED API
Economic time series from the St. Louis Fed
Massive (formerly Polygon.io)
Market data APIs for stocks, options and crypto
OpenBB
Open-source investment research platform
SEC EDGAR
US public company filings database
Twelve Data
Market data for stocks, forex, ETFs and crypto
yfinance
Python library for Yahoo Finance data