KnifeLemon / Filee

Free, open-source file converter. Convert 255 formats offline by drag & drop — images, PDF, Word, Excel, PowerPoint, HWP/HWPX, video, audio, e-books and archives. No upload, no Office needed.

ahwootech / BRUTAL

A free, open source C# framework for making games, or your own game engine. Direct access to native APIs and Vulkan, with the low-level libraries around them. The foundation under Kitten Space Agency and RimWorld's Waylith engine.

beeradmoore / dlss-swapper

Windows tool for downloading, managing, and swapping DLSS, FSR, and XeSS DLL files in installed games.

STranslate / STranslate

A ready-to-go translation ocr tool developed with WPF/WPF 开发的一款即用即走的翻译、OCR工具

QuantConnect / Lean

Lean Algorithmic Trading Engine by QuantConnect (Python, C#)

madoiscool / LuaTools

AppID Manager for ST

Lertaro / Lertaro

A modern, high-performance local file search and productivity tool for Windows. A sleek, customizable alternative to Everything and Listary built with C# WPF and NT Services, featuring instant NTFS MFT parsing, real-time USN monitoring, and plugin support.

icsharpcode / ILSpy

.NET Decompiler with support for PDB generation, ReadyToRun, Metadata (&more) - cross-platform!

kevinnie2003 / LOMAssistant

咖啡伴侣：《活侠传》全能Mod - 剧情回顾、分支自选、修改面板、存档优化、随时存档 / 咖啡伴侶：《活俠傳》全能Mod - 劇情回顧、分支自選、修改面板、存檔優化、隨時存檔 / Coffee Companion: All-in-One Mod for Legend of Mortal - story overview, branch picking, stat editor, better saves, save anywhere / 珈琲のおとも：『活俠傳』オールインワンMod - ストーリー振り返り、分岐選択、数値エディタ、セーブ改良、随時セーブ / 커피 동반자: 『활협전』 올인원 Mod - 스토리 회고, 분기 선택, 수치 편집, 저장 개선, 수시 저장

nota-daw / nota

Nota — a free DAW for macOS, Windows and Linux. No subscription, no account — just open it and make music.

Tyrrrz / YoutubeDownloader

Downloads videos and playlists from YouTube

StockSharp / StockSharp

Algorithmic trading and quantitative trading open source platform to develop trading robots (stock markets, forex, crypto, bitcoins, and options).

finna / herdr-hud

Manage your Herdr agents while gaming. Floating desktop HUD for macOS and Windows; Omarchy plugin linked inside.

Diorser / LiteMonitor

一款轻量级、高度可定制的 Windows桌面和任务栏硬件性能监控工具，支持监测 CPU、GPU、内存、磁盘、网速、FPS 计数、插件扩展及内存清理。A lightweight, customizable hardware monitor for the Windows desktop & taskbar. Features CPU/GPU/RAM/Network monitoring, FPS counter, plugin support, and memory optimization.

Unity-Technologies / unity-agent-plugin

Unity plugin for third-party agent platforms

OpenRA / OpenRA

Open Source real-time strategy game engine for early Westwood games such as Command & Conquer: Red Alert written in C# using SDL and OpenGL. Runs on Windows, Linux, *BSD and Mac OS X.

lively-community / lively

Free and open-source software that allows users to set animated desktop wallpapers and screensavers powered by WinUI 3.

SteveTheKiller / KillerPDF

Free and open-source PDF editor for Windows with a built-in PDF 2.0 engine. View, annotate, OCR, merge, split, crop, rotate, compare, edit text, draw, sign, fill forms, print, flatten, and open password-protected PDFs without a subscription.

VlcekM / MeitouClient

Open-source reimplementation of the Kenshi engine in C# / .NET 10 using a custom Vulkan renderer. Needs your own copy of Kenshi.

openutau / OpenUtau

Open singing synthesis platform / Open source UTAU successor

Macro-Deck-App / Macro-Deck

The open-source macro pad with customizable widgets, powerful integrations and a secure plugin ecosystem.

CoderGamester / mcp-unity

Model Context Protocol (MCP) plugin to connect with Unity Editor — designed for Cursor, Claude Code, Codex, Windsurf and other IDEs

BYTEX-TRADE / bytex

Event-driven algorithmic trading engine for .NET. Write a strategy once and run it unchanged in backtest, paper and live trading, deterministic, with fixed-point money and adapters for Binance, Bybit, OKX, Kraken, Bitget, Gate, KuCoin and Hyperliquid.

Flow-Launcher / Flow.Launcher

:mag: Quick file search & app launcher for Windows with community-made plugins

zhongkaifu / TensorSharp

A native .NET LLM inference engine and agent runtime for GGUF models. TensorSharp provides a console application, a web-based chatbot interface, iPhone App, and Ollama/OpenAI-compatible HTTP APIs for programmatic access. It supports Windows/MacOS/iOS/Linux with full GPU capability

CAPCOM-TD-OSS / REDox

High-performance, token-based structured data engine for .NET. A core component of REX, the technology behind CAPCOM's next-generation game engine.

BepInEx / BepInEx

Unity / XNA game patcher and plugin framework

everlosttime / glassdesk-open-source

GlassDesk 1.4.0 Windows 11 Dock and launcher source, without information bar. Noncommercial original changes; historical Apache and third-party rights retained.

stride3d / stride

Stride (formerly Xenko), a free and open-source cross-platform C# game engine.

aethai / ro3emu-server

Open-source Ragnarok Online 3 (RO3) PC server emulator in C# / .NET 10. Client-documented protocol, multiplayer systems, tools and research.

microsoft / Generative-AI-for-beginners-dotnet

Five lessons, learn how to really apply AI to your .NET Applications

pearlxcore / PS5PKGTool

A Windows app for managing your PS5 dump and image collection, reading PS5 packages, and building or converting images.

AssetRipper / AssetRipper

GUI application to analyze game files

SamboyCoding / Cpp2IL

Work-in-progress tool to reverse unity's IL2CPP toolchain.

MonoGame / MonoGame

One framework for creating powerful cross-platform games.

IvanMurzak / Unity-MCP

AI Skills, MCP Tools, and CLI for Unity Engine. Full AI develop and test loop. Use cli for quick setup. Efficient token usage, advanced tools. Any C# method may be turned into a tool by a single line. Works with Claude Code, Gemini, Copilot, Cursor and any other absolutely for free.

LavaGang / MelonLoader

The World's First Universal Mod Loader for Unity Games compatible with both Il2Cpp and Mono

evolutionary-architecture / evolutionary-architecture-by-example

Navigate the complex landscape of .NET software architecture with our step-by-step, story-like guide. Unpack the interplay between modular monoliths, microservices, domain-driven design, and various architectural patterns. Go beyond the one-size-fits-all solutions and understand how to blend these approaches based on your unique needs.

KNG7-P / Se7en-Pro

Modern Multi-Engine Windows Client & Anti-Censorship Suite

BornToBeRoot / NETworkManager

A powerful open-source tool for managing networks and troubleshooting network problems!

Revolutionary-Games / Thrive

The main repository for the development of the evolution game Thrive.

4sval / FModel

Unreal Engine Archives Explorer

microsoft / winappCli

winapp, the Windows App Development CLI, is a single command-line interface for managing Windows SDKs, packaging, generating app identity, manifests, certificates, and using build tools with any app framework.

intro-skipper / intro-skipper

Automatically detect and skip intro/credit sequences in Jellyfin

rayenghanmi / RyTuneX

RyTuneX is an advanced system tuning engine built with WinUI 3 and .NET, designed to debloat, optimize, and maximize performance on Windows 10 and 11.

timschneeb / GalaxyBudsClient

Unofficial Galaxy Buds Manager for Windows, macOS, Linux, and Android

elsa-workflows / elsa-core

The Workflow Engine for .NET

ppy / osu-framework

A game framework written with osu! in mind.

ProwlEngine / Prowl

An Open Source C# 3D Game Engine under MIT license, inspired by Unity and featuring a complete editor

WolvenKit / WolvenKit

Community Mod editor/creator for REDengine games.

MikuLeaks / MikuSB

Open-source C#/.NET research server emulator for local protocol and networking experimentation.

space-wizards / RobustToolbox

Robust multiplayer game engine, used by Space Station 14

itsnik-scrpt / FigmaBridge

Figma-to-Engine UI Pipeline: Figma Auto-Layout → Unity UI Toolkit (UMG & Godot on roadmap) via WebSocket hot-reload and an IR layout compiler

NethermindEth / nethermind

A robust, high-performance execution client for Ethereum node operators.

data-goblin / power-bi-agentic-development

Power BI AI skills and Power BI agents for Claude Code and GitHub Copilot: a plugin marketplace of Power BI skills, subagents, and hooks for semantic models, DAX, TMDL, reports, and AI dashboards. Includes Microsoft Fabric skills and Fabric agents. Weekly updates.

AtomUI / AtomUI

An enhancement and extension library for Avalonia, bringing the Ant Design design language, modern controls, theming, native integrations, and cross-platform UI capabilities to .NET desktop apps.

nautilusbits / mdk-sdl

Port of MDK (Shiny Entertainment, 1997) to C# and SDL3, based on reverse engineering: stereo 3D, VR viewer (Cardboard) on Android and desktop, gamepads - work in progress

ClassIsland / ClassIsland

一款功能强、可定制、跨平台，适用于班级多媒体屏幕的课表信息显示工具，可以一目了然地显示各种信息。

TASEmulators / BizHawk

BizHawk is a multi-system emulator written in C#. BizHawk provides nice features for casual gamers such as full screen, and joypad support in addition to full rerecording and debugging tools for all system cores.

Alex-Rachel / TEngine

Unity 商用级别开发框架，原生内置 AI 工作流支持，集成 HybridCLR 高性能热更、Obfuz 代码混淆加固、YooAssets 企业级资源管理方案，构建高效、安全、可扩展的工业化开发底座。