The Reactive Extensions for .NET

Extremely Fast MessagePack Serializer for C#(.NET, .NET Core, Unity, Xamarin). / msgpack.org[C#]

Unified Realtime/API framework for .NET platform and Unity.

The new future of dotnet/reactive and UniRx.

DnsClient.NET is a simple yet very powerful and high performant open source library for the .NET Framework to do DNS lookups

PInvoke Interop Assistant

Barcode generation library written in C# and .NET Standard 2

Reactive queryable observable framework.

A server-less .NET Event Store based on the Atom syndication format

SQL Server Migrator

Per the book "TDD by Example" by Marcel Popescu. A mathematical expression evaluator