QuantConnect

Python and C# algorithmic trading platform

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Lean Lean Public

Lean Algorithmic Trading Engine by QuantConnect (Python, C#)

C# 21.3k 5.2k
lean-cli lean-cli Public

CLI for running the LEAN engine locally and in the cloud

Python 324 170
Research Research Public

Open sourced research notebooks by the QuantConnect team.

Jupyter Notebook 804 202
Documentation Documentation Public

QuantConnect Wiki Style Documentation Behind QuantConnect

HTML 259 191
Tutorials Tutorials Public

Jupyter notebook tutorials from QuantConnect website for Python, Finance and LEAN.

Jupyter Notebook 739 246

Repositories

Type Language Sort

Lean.Brokerages.dYdX Public
dYdX Brokerage Plugin

QuantConnect/Lean.Brokerages.dYdX's past year of commit activity

C# 3 8 1 0 Updated Aug 25, 2026
Lean.Brokerages.Tastytrade Public
Tastytrade Brokerage Implementation

QuantConnect/Lean.Brokerages.Tastytrade's past year of commit activity

C# 11 12 4 0 Updated Aug 25, 2026
Lean.Brokerages.Alpaca Public
Alpaca Brokerage Implementation

QuantConnect/Lean.Brokerages.Alpaca's past year of commit activity

C# 17 22 4 0 Updated Aug 25, 2026
Lean.Brokerages.TradeStation Public
TradeStation Brokerage Plugin

QuantConnect/Lean.Brokerages.TradeStation's past year of commit activity

C# 20 19 5 0 Updated Aug 25, 2026
Lean.DataSource.FactSet Public
Implementation to the public FactSet Data API.

QuantConnect/Lean.DataSource.FactSet's past year of commit activity

C# 5 9 0 0 Updated Aug 25, 2026
Lean.DataSource.CoinAPI Public
LEAN CoinAPI Data Source

QuantConnect/Lean.DataSource.CoinAPI's past year of commit activity

C# 3 Apache-2.0 8 0 0 Updated Aug 25, 2026
Lean.DataSource.AlphaVantage Public
LEAN Alpha Vantage Data Source

QuantConnect/Lean.DataSource.AlphaVantage's past year of commit activity

C# 12 Apache-2.0 16 0 0 Updated Aug 25, 2026
Lean.DataSource.IQFeed Public
LEAN IQFeed Data Source

QuantConnect/Lean.DataSource.IQFeed's past year of commit activity

C# 3 11 1 0 Updated Aug 25, 2026
Lean.DataSource.ThetaData Public
Integration with ThetaData for Options History and Live Streaming

QuantConnect/Lean.DataSource.ThetaData's past year of commit activity

C# 24 Apache-2.0 16 3 0 Updated Aug 25, 2026
Lean.DataSource.DataBento Public
Historical downloads and live data streaming

QuantConnect/Lean.DataSource.DataBento's past year of commit activity

C# 7 Apache-2.0 8 0 0 Updated Aug 25, 2026