API Category

Stock Market

Browse stock market data APIs for real-time quotes, historical OHLCV data, earnings, financials, and technical indicators. Compare data depth, update frequency, and free tier limits for trading apps and fintech projects.

5 APIs

Massive API

Institutional-grade real-time market data at sub-20ms latency

🌐 FREEMIUM ✓ Verified

Auth Method API Key

Free Tier Yes — 5 requests/min (delayed data)

★ 4.7

Finnhub API

Global stocks, fundamentals, ESG, news & alternative data

🌐 FREEMIUM ✓ Verified

Auth Method API Key

Free Tier Yes — 60 requests/min free

★ 4.6

Twelve Data API

Real-time and historical data with 99.95% uptime guarantee

🌐 FREEMIUM ✓ Verified

Auth Method API Key

Free Tier Yes — 800 requests/day, 8 per minute free

★ 4.6

Financial Modeling Prep API

Deep fundamental data, financial statements, DCF, screener

🌐 FREEMIUM ✓ Verified

Auth Method API Key

Free Tier Yes — 250 requests/day free

★ 4.5

Alpha Vantage API

Stocks, forex, crypto and 60+ technical indicators

🌐 FREEMIUM ✓ Verified

Auth Method API Key

Free Tier Yes — 25 requests/day free

★ 4.4