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.

memstechtips / Winhance

Application designed to optimize, customize and enhance your Windows experience.

PowerShell / PowerShell

PowerShell for every system!

EgorBo / BlazingFastDotnet

Tips & tricks to tune .NET workloads for better perf (mostly, targeting benchmarks).

seerge / g-helper

Lightweight Armoury Crate alternative for Asus laptops with nearly the same functionality. Works with ROG Zephyrus, Flow, TUF, Strix, Scar, ProArt, Vivobook, Zenbook, Expertbook, ROG Ally, and more.

itsfatduck / optimizerDuck

Free, open-source Windows optimization tool for performance, privacy, and simplicity.

QuantConnect / Lean

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

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!

huynhsontung / Screenbox

LibVLC-based media player for the Universal Windows Platform

ralphtradesz / trading-hub

Plataforma de trading gratis y de código abierto para Mac (con guía para portarla a Windows con Claude): footprint, DOM, backtesting anti-sobreoptimización y estrategias con IA. 100 % local.

sourcegit-scm / sourcegit

Windows/macOS/Linux GUI client for GIT users

nota-daw / nota

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

StockSharp / StockSharp

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

TechnitiumSoftware / DnsServer

Technitium DNS Server

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.

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.

openutau / OpenUtau

Open singing synthesis platform / Open source UTAU successor

LykosAI / StabilityMatrix

Multi-Platform Package Manager for Stable Diffusion

LenovoLegionToolkit-Team / LenovoLegionToolkit

Lenovo Legion Toolkit (LLT) is a Windows desktop utility created for Lenovo gaming laptops that replaces Lenovo Vantage, Legion Zone, and Legion Space.

WDHUS4G / Filee

Free, open-source file converter (mirror of KnifeLemon/Filee, MIT). Convert 180+ formats offline

DevToys-app / DevToys

A Swiss Army knife for developers.

pearlxcore / PS4PKGTool

Manage and perform various operations on PS4 PKG.

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.

d2phap / ImageGlass

🏞 A fast, open-source, modern image viewer for 90+ formats – including WEBP, GIF, SVG, AVIF, JXL, HEIC and more – built for smooth browsing across Windows, macOS, and Linux.

greenshot / greenshot

Greenshot for Windows - for more information look here:

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.

Kareadita / Kavita

Kavita is a fast, feature rich, cross platform reading server. Built with the goal of being a full solution for all your reading needs. Setup your own server and share your reading collection with your friends and family.

Jeric-X / SyncClipboard

跨平台剪贴板同步、历史记录管理工具 / Cross-platform cipboard syncing, history management tool

FroggMaster / CreamInstaller

Automatically finds all installed Steam, Epic and Ubisoft games with their respective DLC-related DLL locations on the user's computer, parses SteamCMD, Steam Store and Epic Games Store for user-selected games' DLCs, then provides a very simple graphical interface utilizing the gathered information for the maintenance of DLC unlockers.

zoefix / agent-speed

Agent Speed — A lightweight, real-time token speed monitor for Codex and Claude Code. Track tokens per second (TPS), detect slowdowns, and monitor AI agent performance at a glance.

git-ecosystem / git-credential-manager

Secure, cross-platform Git credential storage with authentication to GitHub, Azure Repos, and other popular Git hosting services.

AssetRipper / AssetRipper

GUI application to analyze game files

dotnet / aspnetcore

ASP.NET Core is a cross-platform .NET framework for building modern cloud-based web applications on Windows, Mac, or Linux.

MonoGame / MonoGame

One framework for creating powerful cross-platform games.

nilaoda / N_m3u8DL-RE

Cross-Platform, modern and powerful stream downloader for MPD/M3U8/ISM. English/简体中文/繁體中文.

AvaloniaUI / Avalonia

Develop Desktop, Embedded, Mobile and WebAssembly apps with C# and XAML. The future of .NET UI

ValveResourceFormat / ValveResourceFormat

Source 2 Viewer is an all-in-one tool to browse VPK archives, view, extract, and decompile Source 2 assets, including maps, models, materials, textures, sounds, and more.

0x90d / videoduplicatefinder

Video Duplicate Finder - Crossplatform

velopack / velopack

Installer and automatic update framework for cross-platform desktop applications

EvotecIT / OfficeIMO

MIT-licensed, COM-free .NET libraries for creating, reading, editing, converting, rendering, and extracting Office, PDF, email, OneNote, and text formats.

mcmonkeyprojects / SwarmUI

SwarmUI (formerly StableSwarmUI), A Modular Stable Diffusion Web-User-Interface, with an emphasis on making powertools easily accessible, high performance, and extensibility.

kwsch / PKHeX

Pokémon Save File Editor

vchelaru / Gum

Flexible layout tool for creating UI on any platform

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.

OpenTabletDriver / OpenTabletDriver

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

SnapXL / SnapX

SnapX is a free, open-source, cross-platform tool that lets you capture or record any area of your screen and instantly share it with a single keypress. Upload images, videos, text, and more to multiple supported destinations—all with ease. ShareX fork

TheeHorse / SAGE-Unlocked

Run all SAGE based games above 30 fps at normal game speed.

dotnet / runtime

.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.

dotnet / efcore

EF Core is a modern object-database mapper for .NET. It supports LINQ queries, change tracking, updates, and schema migrations.

simple-acme / simple-acme

A simple cross platform ACME client (for use with Let's Encrypt et al.)

dulaiduwang003 / Pavise-Game

Open-source Windows game resource manager. Suppresses background processes, gives games exclusive CPU cores, steers device interrupts off game cores, applies per-game GPU driver, memory and power policies, and restores every change after play. No injection, no telemetry. GPL-3.0.

nopSolutions / nopCommerce

ASP.NET Core eCommerce software. nopCommerce is a free and open-source shopping cart.

dotnet / yarp

A toolkit for developing high-performance HTTP reverse proxy applications.

Unity-Technologies / EntityComponentSystemSamples

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fullstackhero / dotnet-starter-kit

Production Grade Cloud-Ready .NET 10 Starter Kit (Web API + React Client) with Multitenancy Support, and Clean/Modular Architecture that saves roughly 200+ Development Hours! All Batteries Included.

Taiizor / ReaLTaiizor

ReaLTaiizor is a .NET WinForms control library that offers a wide range of components and is user-friendly and design-focused.