PolySharp by: Sergio Pedri

PolySharp provides generated, source-only polyfills for C# language features, to easily use all runtime-agnostic features downlevel

Portable.BouncyCastle by: Oren Novotny

BouncyCastle portable version with support for .NET 4, .NET Standard 1.0-2.0, .NET Core

Portable.ConcurrentDictionary by: Stef Heyenrath

This is a .NET Standard 1.0, .NET 2.0, .NET 3.5, Silverlight 5.0 and Windows Phone Silverlight 8.0 & 8.1 backport from System.Collections.Concurrent.ConcurrentDictionary as defined in .NET Core

protobuf-net by: Marc Gravell

Provides simple access to fast and efficient "Protocol Buffers" serialization from .NET applications

QLNet by: Andrea Maggiulli

A free/open-source library for quantitative finance

QuantConnect.Algorithm by: QuantConnect.Algorithm

QuantConnect LEAN Engine: Algorithm Project - Core QCAlgorithm implementation

QuantConnect.Algorithm.CSharp by: QuantConnect.Algorithm.CSharp

QuantConnect LEAN Engine: Algorithm.CSharp Project - A collection of C# algorithm demonstrations for how to use the API

QuantConnect.Algorithm.Framework by: QuantConnect.Algorithm.Framework

QuantConnect LEAN Engine: Algorithm.Framework Project - The core QCAlgorithm framework implementation

QuantConnect.AlgorithmFactory by: QuantConnect.AlgorithmFactory

QuantConnect LEAN Engine: Algorithm.AlgorithmFactory Project - Factory for instantiation of QCAlgorithm algorithm objects to be used with LEAN

QuantConnect.Api by: QuantConnect Team and Community Contributors

QuantConnect LEAN Engine: API Project - C# SDK for interaction with the QuantConnect.com

QuantConnect.Brokerages by: QuantConnect.Brokerages

QuantConnect LEAN Engine: Brokerages Project - A collection of brokerages for live trading and backtesting

QuantConnect.Common by: QuantConnect.Common

QuantConnect LEAN Engine: Common Project - A collection of common definitions and utils

QuantConnect.Compression by: QuantConnect Team and Community Contributors

QuantConnect LEAN Engine: Compression Project - A library with compression tools

QuantConnect.IBAutomater by: QuantConnect Corp.

QuantConnect IBAutomater package

QuantConnect.Indicators by: QuantConnect.Indicators

QuantConnect LEAN Engine: Indicators Project - A collection of financial indicators

QuantConnect.Lean by: QuantConnect Team and Community Contributors

QuantConnect LEAN Engine: Launcher Project - Main startup executable for live and backtesting

QuantConnect.Lean.Engine by: QuantConnect.Lean.Engine

QuantConnect LEAN Engine: Engine Project - Core engine and datafeed implementation

QuantConnect.Logging by: QuantConnect.Logging

QuantConnect LEAN Engine: Logging Project - The logging library implementation

QuantConnect.Messaging by: QuantConnect Team and Community Contributors

QuantConnect LEAN Engine: Messaging Project - The external messaging system implementation

QuantConnect.pythonnet by: QuantConnect Python Team

QuantConnect PythonNET package