Unofficial revival of the well known .NET debugger and assembly editor, dnSpy

PixiEditor is a Universal Editor for all your 2D needs

Steamless is a DRM remover of the SteamStub variants. The goal of Steamless is to make a single solution for unpacking all Steam DRM-packed files. Steamless aims to support as many games as possible.

Open source, cross-platform, user-mode tablet driver

An open source mesh slicer framework for Unity3D Game Engine. Written in C#.

AssetStudioMod - modified version of Perfare's AssetStudio, mainly focused on UI optimization and some functionality enhancements.

(Windows) Steam Deck Tools - Fan, Overlay, Power Control and Steam Controller for Windows

Free, Open Source, User-Mode SMB 1.0/CIFS, SMB 2.0, SMB 2.1 and SMB 3.0 server and client library

The ultimate community-driven, and open-source competitive rhythm game available on Steam.

Simple Embeddable HTTP server class in C#

Universal VR mod for Unity games

MTP Library

Game data conversion/export/import helper libraries - UNMAINTAINED

Mod manager for the Yakuza/Like a Dragon series (Ryu Ga Gotoku) PC games.

Certain game DLC unlocking meme for Steam version. Maybe you shouldn't pay for pixel Reimu?

LPE / RCE Exploits for various vulnerable "Bloatware" products

Use DualSense's features and emulate Xbox 360 controller and DualShock 4

A 5-part series tutorial on how to use the Windows Portable Devices (WDP) API in C#. Written between 2011-05-22 and 2012-04-17.