C# pure functional programming framework - come and get declarative!

1BRC in .NET among fastest on Linux

A HashTable implementation written in C++

SMTP Server in C#

A tiny, friendly, C# parser construction library

Use Microsoft.Extensions.DependencyInjection to resolve xUnit test cases.

The Reactive Extensions for .NET

A C# parser construction toolkit with high-quality error reporting

A port of Clojure to the CLR, part of the Clojure project

A painting resource pack generator website for Minecraft

.net/mono/xamarin/winrt in-process object database

C# .NET NOSQL ( key value, object store embedded TextSearch SemanticSearch Vector layer ) ACID multi-paradigm database management system.

LiteDB - A .NET NoSQL Document Store in a single data file

Cisco's openh264 wrapper library for .NET Framework.