Unity Node Editor: Lets you view and edit node graphs inside Unity

The Vodeo ECS Framework for Unity that leverages Burst and Jobs

Lua style coroutines for C# with Unity style waiting

SSH.NET is a Secure Shell (SSH) library for .NET, optimized for parallelism.

Impostor - An open source reimplementation of the Among Us Server

List of all the third party Steam sites that I know of

A pure managed C# implementation of the Netcode.IO spec

Library with a set of tools for scraping information about Nintendo games and its prices across all regions (NA, EU and JP).

.NET/Mono/Unity Networking Library

A Flash Player emulator written in Rust

A pure C# implementation of xxhash(https://code.google.com/p/xxhash/)

Managed C# abstraction of GameNetworkingSockets library by Valve Software

Attribute Extensions for Unity

A proposal for a true "Flash Emulator"

Reliable & unreliable messages over UDP. Robust message fragmentation & reassembly. P2P networking / NAT traversal. Encryption.

Hazel Networking is a low level networking library for C# providing connection orientated, message based communication via TCP, UDP and RUDP.

Millennium: A fan game framework/engine in Unity 2018 based on Paper Mario: The Thousand-Year Door

The software powering Ludum Dare game jam events

Celeste Bugs & Issue Tracker + some Source Code

Example integration of Unity's UNET HLAPI and Steamworks P2P networking using Steamworks.NET.

Game and tools oriented refactored version of GLU tesselator.

Use Flash to create XNA games (now works with XNA4). Thanks to Patrick Godwin, now works with WinPhone7 as well!

Pokémon battle simulator.