# Every tool in the catalogue

3 products. Each line links to the card's Markdown twin.

- [Alpha Vantage](https://stockmarketstack.com/tools/alpha-vantage.md) — The API most people's first script talks to — free key, wide coverage, hard rate limits. (market-data-apis)
- [Polygon.io](https://stockmarketstack.com/tools/polygon-io.md) — Full-tick US equities, options and forex from a direct exchange feed. (market-data-apis)
- [yfinance](https://stockmarketstack.com/tools/yfinance.md) — The Python library everyone starts with — free, unofficial, and not something to build on. (market-data-apis)