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QuantConnect / Lean
Lean Algorithmic Trading Engine by QuantConnect (Python, C#)
protocolbuffers / protobuf
Protocol Buffers - Google's data interchange format
Popularity
Repository stars22,36172,154Highest
Fork5,37416,358Highest
Maintenance
Last push2026-11-022026-11-06
Maintenance notesNot verifiedNot verified
Repository created2014-11-282014-08-26
License & use
LicenseApache-2.0 · PermissiveLicense not declared
PricingPricing not verifiedPricing not verified
Basics
Browse by purposeDeveloper toolsDeveloper tools
TypeFrameworks & SDKsFrameworks & SDKs
SubcategoryAlgorithms & utility librariesAlgorithms & utility libraries
PlatformNot verifiedNot verified
First collected2026-11-032026-11-03
LanguageC#C++
License tiers are derived from metadata. Check obligations for your use; unknown does not mean prohibited. Measured at 2026-11-03 UTC