1.KnifeLemon / Filee
Free, open-source file converter. Convert 263 formats offline by drag & drop — images, PDF, Word, Excel, PowerPoint, HWP/HWPX, video, audio, e-books and archives. No upload, no Office needed.
Ranked by Attention Score: stars gained over the last 30 complete days
1–100 of 237 by Attention Score · Oct 4, 2026 – Nov 2, 2026 (UTC)
Free, open-source file converter. Convert 263 formats offline by drag & drop — images, PDF, Word, Excel, PowerPoint, HWP/HWPX, video, audio, e-books and archives. No upload, no Office needed.
The Free Software Media System - Server Backend & API
ShareX is a free and open-source application that enables users to capture or record any area of their screen with a single keystroke. It also supports uploading images, text, and various file types to a wide range of destinations.
A modern file manager that helps users organize their files and folders.
Speech-to-text, text-to-speech, speaker diarization, speech enhancement, source separation, and VAD using next-gen Kaldi with onnxruntime without Internet connection. Support embedded systems, Android, iOS, HarmonyOS, Raspberry Pi, RISC-V, RK NPU, Axera NPU, Ascend NPU, x86_64 servers, websocket server/client, support 12 programming languages
🛠「Watt Toolkit」是一个开源跨平台的多功能 Steam 工具箱。
Bitwarden infrastructure/backend (API, database, Docker, etc).
Video game library manager with support for wide range of 3rd party libraries and game emulation support, providing one unified interface for your games.
Free and open-source software that allows users to set animated desktop wallpapers and screensavers powered by WinUI 3.
🏞 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.
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.
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.
This open-source curriculum introduces the fundamentals of Model Context Protocol (MCP) through real-world, cross-language examples in .NET, Java, TypeScript, JavaScript, Rust and Python. Designed for developers, it focuses on practical techniques for building modular, scalable, and secure AI workflows from session setup to service orchestration.
Unofficial revival of the well known .NET debugger and assembly editor, dnSpy
LibVLC-based media player for the Universal Windows Platform
Scalable open-source game backend server: multiplayer, matchmaking, leaderboards, chat, and social features for games.
Compile C# and .NET CIL to small standalone Wasm with WASI (AOT with built-in Runtime and Precise GC)
Develop Desktop, Embedded, Mobile and WebAssembly apps with C# and XAML. The future of .NET UI
PEASS - Privilege Escalation Awesome Scripts SUITE (with colors)
The fast, precise document-intelligence engine for every language: text, tables and metadata from 100+ formats, with OCR, transcription and code intelligence.
A Swiss Army knife for developers.
One framework for creating powerful cross-platform games.
🔥LeetCode solutions in any programming language | 多种编程语言实现 LeetCode、《剑指 Offer(第 2 版)》、《程序员面试金典(第 6 版)》题解
Pulumi - Infrastructure as Code in any programming language 🚀
Bitmap & tilemap generation from a single example with the help of ideas from quantum mechanics
WinUI: a modern UI framework with a rich set of controls and styles to build dynamic and high-performing Windows applications.
The main repository for the development of the evolution game Thrive.
C# application with primary purpose of farming Steam cards from multiple accounts simultaneously.
A collection of awesome .NET libraries, tools, frameworks and software
A lightweight, high-performance, industrial-grade cross-language logging library (C++/Java/C#/Kotlin/TS/Python/Go), battle-tested in Honor of Kings.
The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.
A Camera addon for Godot 4. Inspired by Cinemachine.
A powerful nonlinear dialogue system for Godot
A wrapper executable that can run any executable as a Windows service, in a permissive license.
Cross Platform Terminal UI toolkit for .NET
A rewrite of the old legacy software "depends.exe" in C# for Windows devs to troubleshoot dll load dependencies issues.
Provides an efficient allocation free async/await integration for Unity.
Blazor Component Library based on Material Design principles. Do more with Blazor, utilizing CSS and keeping JavaScript to a bare minimum.
:honeybee: A collection of awesome .NET core libraries, tools, frameworks and software
A curated list of Multiplayer Game Network Programming Resources
Windows Calculator: A simple yet powerful calculator that ships with Windows
A library for patching, replacing and decorating .NET and Mono methods during runtime
Open-source platform for building cross-platform native Mobile, Web, Desktop, and Embedded apps from a single C#/XAML codebase. Work from any IDE/CLI with Hot Reload, Visual Designer, MCPs, and Skills built for modern .NET workflows. 200M+ NuGet downloads.
Simple GTK Paint Program
The high-speed OpenGL, OpenCL, OpenAL, OpenXR, GLFW, SDL, Vulkan, Assimp, WebGPU, and DirectX bindings library your mother warned you about.
Lightweight embeddable web server written in pure C# with few dependencies to 3rd-party libraries.
Enterprise-grade feature flag platform that you can self-host. Get started - free.
A .NET library that makes it easier to create beautiful console applications.
An alternative bootstrapper for Roblox with a bunch of extra features.
Clean Architecture Solution Template: A proven Clean Architecture Template for ASP.NET Core 10
Kaitai Struct: declarative language to generate binary data parsers in C++ / C# / Go / Java / JavaScript / Lua / Nim / Perl / PHP / Python / Ruby / Rust
Human-readable schedule expressions for .NET (C#): write "every day at 9am except sunday" instead of cron. Time zones, fluent builder, custom keywords, cron converter.
Open-source web application framework for ASP.NET Core! Offers an opinionated architecture to build enterprise software solutions with best practices on top of the .NET. Provides the fundamental infrastructure, cross-cutting-concern implementations, startup templates, application modules, UI themes, tooling and documentation.
Um guia extenso de informações com um vasto conteúdo de várias áreas para ajudar, agregar conhecimento e retirar dúvidas, nesse guia você encontrará tudo que necessário para qualquer carreira relacionada a tecnologia.
The official repo for the design of the C# programming language
Roadmap to becoming an ASP.NET Core developer in 2026
Generate types and converters from JSON, Schema, and GraphQL
The Workflow Engine for .NET
Radzen Blazor is the most sophisticated free UI component library for Blazor, featuring 155+ native components including DataGrid, Scheduler, Charts, and advanced theming with full support for Material Design and Fluent UI. If Radzen Blazor is useful to you, a ⭐ on GitHub helps other Blazor developers find it.
:bathtub: Clean Code concepts and tools adapted for .NET
xLua is a lua programming solution for C# ( Unity, .Net, Mono) , it supports android, ios, windows, linux, osx, etc.
Automate SSL/TLS certificates on Windows with ease
ANTLR (ANother Tool for Language Recognition) is a powerful parser generator for reading, processing, executing, or translating structured text or binary files.
A .NET source generator for generating object mappings. No runtime reflection.
Powerful .NET library for benchmarking
A distributed transaction framework, supports workflow, saga, tcc, xa, 2-phase message, outbox patterns, supports many languages.
A fast, powerful, CommonMark compliant, extensible Markdown processor for .NET
Microsoft Fluent UI Blazor components library. For use with ASP.NET Core Blazor applications
MQTTnet is a high performance .NET library for MQTT based communication. It provides a MQTT client and a MQTT server (broker). The implementation is based on the documentation from http://mqtt.org/.
Resources for Blazor, a .NET web framework using C#/Razor and HTML that runs in the browser with WebAssembly.
Umbraco is a free and open source .NET content management system helping you deliver delightful digital experiences.
ACID Document Database
High-performance C# ECS
FusionCache is an easy to use, fast and robust hybrid cache with advanced resiliency features.
A composable, cross-platform MVVM framework for .NET inspired by functional reactive programming. It moves mutable state out of the user interface, keeps each feature's logic in one readable place, and makes applications easier to test. Supports WPF, WinForms, WinUI, .NET MAUI, Avalonia, Uno Platform, Blazor and Android.
FNA - Accuracy-focused XNA4 reimplementation for open platforms
Contains some simple and commonly used WPF controls
C# .NET 10 Blazor habit tracker application. Works on Web, Windows, Linux, Android, iOS and macOS.
.NET version of the Playwright testing and automation library.
A modular, scalable and ultra-fast open-source all-in-one eCommerce platform built on ASP.NET Core 10
Turn any website into clean, structured data: Markdown, metadata and links from one page or a whole site, in every major language.
Amplication brings order to the chaos of large-scale software development by creating Golden Paths for developers - streamlined workflows that drive consistency, enable high-quality code practices, simplify onboarding, and accelerate standardized delivery across teams.
Apache Thrift
:card_index: A simple fake data generator for C#, F#, and VB.NET. Based on and ported from the famed faker.js.
Python for .NET is a package that gives Python programmers nearly seamless integration with the .NET Common Language Runtime (CLR) and provides a powerful application scripting tool for .NET developers.
.NET Community Toolkit is a collection of helpers and APIs that work for all .NET developers and are agnostic of any specific UI platform. The toolkit is maintained and published by Microsoft, and part of the .NET Foundation.
An implementation of StyleCop rules using the .NET Compiler Platform
DotRecast - a C# port of Recast & Detour, Industry-standard navigation mesh toolset for .NET, Unity3D, games, servers
A small C# game framework
A pure C# Open Source QR Code implementation
A .NET library to run C# code in parallel on the GPU through DX12, D2D1, and dynamically generated HLSL compute and pixel shaders, with the goal of making GPU computing easy to use for all .NET developers! 🚀
A WebRTC, SIP and VoIP library for C# and .NET. Designed for real-time communications apps.
A tool for generating code based on a GraphQL schema and GraphQL operations (query/mutation/subscription), with flexible support for custom plugins.
Mono open source ECMA CLI, C# and .NET implementation.
Headless Chrome .NET API
A framework for building messaging apps with .NET and C#.
CSharpier is an opinionated code formatter for c#.
Lightning-Fast, On-Device, Multilingual TTS — running natively via ONNX.
The Atomic Game Engine is a multi-platform 2D and 3D engine with a consistent API in C++, C#, JavaScript, and TypeScript
ASP.NET Boilerplate - Web Application Framework