Data Providers

Polygon.io is a modern financial data API provider offering real-time and historical market data for stocks, options, forex, and cryptocurrencies. The platform focuses on developer-friendly APIs with competitive pricing and reliable infrastructure. It serves fintech developers, algorithmic traders, and startups building investment applications.

Quandl is a premier alternative financial and economic data platform delivering unique datasets for quantitative analysis and algorithmic trading. Acquired by Nasdaq, it provides access to millions of time-series datasets from hundreds of sources. The platform serves quants, data scientists, and institutional investors seeking non-traditional market data.

Finnhub is a real-time market data API platform providing comprehensive coverage of stocks, forex, and cryptocurrencies with competitive pricing. It offers free and premium tiers with extensive fundamental data, news sentiment, and technical indicators. The platform is popular among developers building financial applications, trading bots, and investment tools.