Free Stock APIs in JSON & Excel | Alpha Vantage Alpha Vantage offers free stock APIs in JSON and CSV formats for realtime and historical equity, forex, cryptocurrency data and over 50 technical indicators. Supports intraday, daily, weekly, and monthly quotes and technical analysis with chart-ready time series.
Kite Connect – REST-like HTTP trading APIs for individual traders and startups Kite Connect is a set of HTTP/JSON stock trading and broker APIs, embeddable trade buttons, and a minimalistic HTML5 trading platform.
Polygon.io - Stock Market Data APIs Free stock data APIs. Real time and historical data, unlimited usage, tick level and aggregate granularity, in standardized JSON and CSV formats. Plus currencies data, including forex, crypto, and more.