Open official siteOpen-source algorithmic trading engine powering QuantConnect.
Source: https://github.com/QuantConnect/Lean
Category: Open Source Terminals. Browse the full tools directory.
Engineers who need the Free open-source LEAN engine listing that powers QuantConnect.
Product feature lists are only shown when verified. Catalog tags are index labels, not marketing claims.
Catalog tags on this listing:
LEAN is listed with a Free pricing tier. Plan names and dollar amounts are not verified on this page.
Catalog notes — not independently verified claims.
Platform and catalog tags on this listing, plus published brokers that share those platform tags.
Published tools with overlapping catalog tags or the same category.
CCXTUnified cryptocurrency trading API across 100+ exchanges.
VectorBTUltra-fast vectorized backtesting and portfolio analysis for Python.
Backtesting.pySimple yet powerful Python backtesting library for trading strategies.
BacktraderFeature-rich Python framework for backtesting and live trading.
btFlexible backtesting framework for Python quantitative traders.
CryptofeedAsync cryptocurrency websocket market-data library.Other published Open Source Terminals tools, excluding the alternatives above.
Lean CLIVerified businessLocal CLI for developing against the LEAN engine.
sec-edgarVerified businessDownload filings and submissions from SEC EDGAR.
OpenBB TerminalLegacy OpenBB terminal that popularised open-source Bloomberg-style research.
Gamestonk TerminalCommunity-driven investment research terminal (OpenBB precursor).
JesseAdvanced crypto trading framework for research, backtesting and live trading.
Zipline ReloadedCommunity-maintained Zipline algorithmic trading library.Editorial catalog pairs only. We do not generate every combination.
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Similar published tools in Open Source Terminals, plus the category and comparison hubs.
Fincept TerminalNative C++20/Qt6 financial research terminal with embedded Python analytics.OpenBBOpen-source investment research platform for equities, crypto, macro and more.
QlibMicrosoft AI-oriented quantitative investment platform.
NautilusTraderHigh-performance event-driven backtesting and live trading platform.
FreqtradeFree open-source crypto trading bot with strategy backtesting and ML hooks.
HummingbotOpen-source market making and arbitrage client for CEX and DEX venues.Also see the Open Source Terminals category, tools directory, and named comparisons.
Awaiting verification
Platforms, Markets — not verified yet. Traderfolio does not invent missing fields.
