QuantConnect (LEAN)
Cloud platform to research, backtest and trade strategies, built on the open-source LEAN engine.
A complete cloud lab with data included; one of the best places to learn quantitative trading.
Who it is for
Anyone who wants historical data for many markets already integrated, without downloading it.
Strengths
- The free plan includes unlimited backtesting and data for equities, indexes, FX, crypto, futures and options.
- The LEAN engine is open source (Apache-2.0) and can run on your own machine.
Good to know
- The free plan includes no live trading nodes (limit 0).
- Free plan limits: 1 backtest node, 1 research node, and minute, hour and daily data resolution.
- The pricing page does not show paid plan prices as text: check it there.
Want a bot built on QuantConnect (LEAN), or something similar?
We set it up, connect it to your accounts and keep it running.
Sources
Every fact on this page comes from these sources, checked on 2026-10-24. If something has changed, the source wins; tell us at hello@heybotify.com.
- https://www.quantconnect.com/pricing/: free plan contents and limits
- https://github.com/QuantConnect/Lean: Apache-2.0 license of the LEAN engine and activity
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PyBroker
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Zipline Reloaded
Community-maintained version of Zipline, the event-driven Python backtester originally built and used by Quantopian.