Best for
Budget Under $30/mo.
Indie devs and side projects looking for the best market data APIs under $30/mo.
Ranked · Top 5
#1
Multi-asset financial data API with generous free tier and 30 years history on premium plans
FROM $0/mo API REST · SDK SDK Python (community) · JavaScript (community)
#2
Simple REST API for global stock market data with a free tier for hobbyists
FROM $0/mo API REST SDK REST-only (community Python wrappers exist)
#3
Alpha Vantage FREE TIER
Free stock API with technical indicators and fundamentals
FROM $0/mo API REST SDK Python · JavaScript · Java
#4
Polygon.io (now Massive) FREE TIER
Real-time and historical stock, options, forex, and crypto data — rebranded to Massive in 2026
FROM $0/mo API REST · WebSocket · SDK SDK Python · JavaScript · Go
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Other Use Cases
Best for Algo TradingBest for Crypto TradingBest for Forex TradingBest for BacktestingBest for Quant ResearchBest for Fintech App DevelopmentBest for BeginnersBest for Options TradingBest for Real-Time Market DataBest for Global EquitiesBest for Python DevelopersBest for JavaScript / Node.js DevelopersBest for Deep Historical DataBest for WebSocket StreamingBest for Free Tier OnlyBest for Institutional / EnterpriseBest for Active TradersBest for Options Trading (Brokers)Best for Global Multi-Asset BrokersBest for Brokers with API AccessBest for Prop Firms for BeginnersBest for Prop Firms for ForexBest for 1-Step Prop Firm ChallengesBest for Highest Prop Firm Profit Splits