protobuf-net.Core by: Marc Gravell

The protobuf-net serialization engine and build-time tooling; most projects should reference protobuf-net, which adds the runtime type model

protobuf-net.Reflection by: Marc Gravell

ProtoBuf DSL (proto2 / proto3) and descriptor tools for protobuf-net

pythonnet by: pythonnet

Python and CLR (.NET and Mono) cross-platform language interop

Qb.Net by: viten-center

QueryBuilder allows you to create queries against a database, describing them as an object, without using tools such as LinqToSql, ORM, etc. and generate their SQL code in the syntax of the DBMS used

QLNet by: Andrea Maggiulli

A free/open-source library for quantitative finance

QRCoder by: Raffael Herrmann, Shane Krueger

QRCoder is a simple library, written in C#.NET, which enables you to create QR codes.

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.Configuration by: QuantConnect Team and Community Contributors

Lean Engine is an open-source, platform agnostic C# and Python algorithmic trading engine. Allows strategy research, backtesting and live trading with Equities, FX, CFD, Crypto, Options and Futures Markets.

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