Ranked by Attention Score: stars gained over the last 90 complete days
1–100 of 143 by Attention Score · Aug 8, 2026 – Nov 5, 2026 (UTC)
Application designed to optimize, customize and enhance your Windows experience.
🏞 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.
Bitwarden infrastructure/backend (API, database, Docker, etc).
Algorithmic trading and quantitative trading open source platform to develop trading robots (stock markets, forex, crypto, bitcoins, and options).
Everything integration for the Windows taskbar.
PEASS - Privilege Escalation Awesome Scripts SUITE (with colors)
TranslatedCloudMoe Windows 10/11 Activation Toolkit get digital license, the best open source Win 10/11 activator in GitHub.
Store securely encrypted backups in the cloud!
One framework for creating powerful cross-platform games.
Bitmap & tilemap generation from a single example with the help of ideas from quantum mechanics
EarTrumpet - Volume Control for Windows
Secure, cross-platform Git credential storage with authentication to GitHub, Azure Repos, and other popular Git hosting services.
The Unity Machine Learning Agents Toolkit (ML-Agents) is an open-source project that enables games and simulations to serve as environments for training intelligent agents using deep reinforcement learning and imitation learning.
Humanizer meets all your .NET needs for manipulating and displaying strings, enums, dates, times, timespans, numbers and quantities
The main repository for the development of the evolution game Thrive.
Unity C# reference source code.
Chocolatey - the package manager for Windows
Git Extensions is a standalone UI tool for managing git repositories. It also integrates with Windows Explorer and Microsoft Visual Studio (2015/2017/2019).
QuestPDF is a modern library for PDF document generation. Its fluent C# API lets you design complex layouts with clean, readable code. Create documents using a flexible, component-based approach.
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.
ASP.NET Core eCommerce software. nopCommerce is a free and open-source shopping cart.
TickerQ is a fast, reflection-free background task scheduler for .NET built with source generators, EF Core integration, cron + time-based execution, and a real-time dashboard.
Prism is a framework for building loosely coupled, maintainable, and testable XAML applications in WPF, Xamarin Forms, and Uno / Win UI Applications..
Central repository for tools, tutorials, resources, and documentation for robotics simulation in Unity.
A simple library for creating state machines in C# code
Microsoft Azure PowerShell
Extremely Fast MessagePack Serializer for C#(.NET, .NET Core, Unity, Xamarin). / msgpack.org[C#]
An easy way to perform background job processing in .NET and .NET Core applications. No Windows Service or separate process required
KurrentDB is a database that's engineered for modern software applications and event-driven architectures. Its event-native design simplifies data modeling and preserves data integrity while the integrated streaming engine solves distributed messaging challenges and ensures data consistency.
A modern, cross-platform, 2D Graphics library for .NET
.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.
:card_index: A simple fake data generator for C#, F#, and VB.NET. Based on and ported from the famed faker.js.
Cross platform GUI framework for desktop and mobile applications in .NET
.NET (WPF and Windows Forms) bindings for the Chromium Embedded Framework
A WebRTC, SIP and VoIP library for C# and .NET. Designed for real-time communications apps.
Mono open source ECMA CLI, C# and .NET implementation.
The automatic type-safe REST library for .NET. Refit turns a REST API into a C# interface and generates the HttpClient implementation, with support for HttpClientFactory, pluggable serializers and a testing package.
AI agents can now write 99% of the code. This changes what it means to be a developer. Our role shifts to knowing "what good looks like". To do that, we need completely new developer tools. Tendril is what replaces your IDE in an agentic era.
Roslynator is a set of code analysis tools for C#, powered by Roslyn.
ILGPU JIT Compiler for high-performance .Net GPU programs
xUnit.net is a free, open source, community-focused unit testing tool for .NET.
Should testing for .NET—the way assertions should be!
The Open Toolkit library is a fast, low-level C# wrapper for OpenGL, OpenAL & OpenCL. It also includes windowing, mouse, keyboard and joystick input and a robust and fast math library, giving you everything you need to write your own renderer or game engine. OpenTK can be used standalone or inside a GUI on Windows, Linux, Mac.
Canonical actor model implementation for .NET with local + distributed actors in C# and F#.
Protocol Buffers library for idiomatic .NET
:bus: Simple and lean service bus implementation for .NET
A .NET GIS solution that is fast and reliable for the .NET platform.
A friendly substitute for .NET mocking libraries.
Fast and fully streamed Man-On-The-Middle to intercept, record, impersonate and alter HTTP/1.1, H2, websocket and gRPC traffic.
RabbitMQ .NET client for .NET Standard 2.0+ and .NET 4.6.2+
An interpreter for the Lua language, written entirely in C# for the .NET, Mono, Xamarin and Unity3D platforms, including handy remote debugger facilities.
All the controls missing in WPF. Over 1 million downloads.
Blazorise is a component library built on top of Blazor with support for CSS frameworks like Bootstrap, Tailwind, Bulma, AntDesign, and Material.
EPPlus-Excel spreadsheets for .NET
A ROS/ROS2 Multi-robot Simulator for Autonomous Vehicles
A 100% native C# implementation of ZeroMQ for .NET
Fellow Oak DICOM for .NET, .NET Core, Universal Windows, Android, iOS, Mono and Unity
DotNetty project – a port of netty, event-driven asynchronous network application framework
A set of tools for graph layout and viewing
Thoughtfully architected, obscenely fast, thoroughly enjoyable web services for all
A very extensive set of extension methods that allow you to more naturally specify the expected outcome of a TDD or BDD-style unit tests. Targets .NET Framework 4.7, as well as .NET Core 2.1, .NET Core 3.0, .NET 6, .NET Standard 2.0 and 2.1. Supports the unit test frameworks MSTest2, NUnit3, XUnit2, MSpec, and NSpec3.
An open source fork of Windows Live Writer
The official Firely .NET SDK for HL7 FHIR
Code analyzer for C# and VB.NET projects
Fast and easy to use .NET library that creates or modifies Microsoft Word files without installing Word.
An advanced audio library, written in C#. Provides tons of features. From playing/recording audio to decoding/encoding audio streams/files to processing audio data in realtime (e.g. applying custom effects during playback, create visualizations,...). The possibilities are nearly unlimited.
iText for .NET is the .NET version of the iText library, formerly known as iTextSharp, which it replaces. iText represents the next level of SDKs for developers that want to take advantage of the benefits PDF can bring. Equipped with a better document engine, high and low-level programming capabilities and the ability to create, edit and enha
A lightweight text templating library written in C# which can be a drop-in replacement for string.Format
Entity Framework EF Core efcore Bulk Batch Extensions with BulkCopy in .Net for Insert Update Delete Read (CRUD), Truncate and SaveChanges operations on SQL Server, PostgreSQL, MySQL, SQLite, Oracle
Extracts Exif, IPTC, XMP, ICC and other metadata from image, video and audio files
.NET Standard wrapper for FFmpeg. It allows to process media without know how FFmpeg works, and can be used to pass customized arguments to FFmpeg from dotnet core application.
Async/await first CQRS+ES and DDD framework for .NET
Workflow Engine by Optimajet, the embeddable workflow engine for .NET and C#. Approvals, state machines and long-running processes with a visual Workflow Designer, BPMN import and six databases.
Strongly typed exceptions for Entity Framework Core. Supports SQLServer, PostgreSQL, SQLite, Oracle and MySql.
Virto's Commerce Innovation Platform. Source-available, modular .NET commerce backend built on Virto Atomic Architecture™.
DSLR camera remote control open source software
A convention-based object-object mapper in .NET.
Open source, headless, multi-tenant eCommerce platform built with .NET Core, MongoDB, AWS DocumentDB, Azure CosmosDB, Vue.js.
Flexible OpenID Connect and OAuth 2.0 server-side implementation for modern ASP.NET projects
Sandcastle Help File Builder (SHFB). A standalone GUI, Visual Studio integration package, and MSBuild tasks providing full configuration and extensibility for building help files with the Sandcastle tools.
The gold standard for async .NET microservices on Azure, AWS and on-prem
Digital Elevation model library in C#. 3D terrain models, line/point Elevations, intervisibility reports
Blazor UI component library based on Material Design. Support Blazor Server, Blazor WebAssembly and MAUI Blazor.
A library designed to ease geographic coordinate format conversions, and determine sun/moon information in C#
ARCHIVE - New Repo: https://aka.ms/toolkit/windows