9 listed, each with a source and last-checked date.
US equities, US futures, US options, crypto, FX
Trading: data only
Pricing: usage-based; $125 new-customer credits for historical data (not live), per Databento user agreement
✓ Checked 2026-10-16
stocks, options, indices, forex
Trading: data only
Pricing: free tier: end-of-day data, 5 req/min, no card; Stocks Starter $29/mo (15-min delayed, includes full-market snapshot); Developer $79/mo; real-time only on Advanced
✓ Checked 2026-10-16
stocks, options, indices
Trading: data only
Pricing: unknown price from a third-party source, unverified
✓ Checked 2026-10-16
stocks
Trading: data only
Pricing: free tier
✓ Checked 2026-10-16
US filings/XBRL fundamentals
Trading: data only
Pricing: free
✓ Checked 2026-10-16
prediction markets
Trading: live
Pricing: free websocket with full orderbook (per Reddit) price from a third-party source, unverified
✓ Checked 2026-10-16
prediction markets
Trading: live
Pricing: free websocket with full orderbook (per Reddit) price from a third-party source, unverified
✓ Checked 2026-10-16
multi-provider wrapper
Trading: data only
Pricing: open source
✓ Checked 2026-10-16
yMarket data APIscommunity
stocks, options chains
Trading: data only
Pricing: free (unofficial Yahoo scraper); Reddit notes greeks/IV unreliable
✓ Checked 2026-10-16