Ranked by Attention Score: stars gained over the last 180 complete days
101–200 of 969 by Attention Score · May 9, 2026 – Nov 4, 2026 (UTC)
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.
Unity C# reference source code.
Beautiful, interactive charts, maps, and gauges. One API for every .NET UI framework.
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.
A library for patching, replacing and decorating .NET and Mono methods during runtime
SkiaSharp is a cross-platform 2D graphics API for .NET platforms based on Google's Skia Graphics Library. It provides a comprehensive 2D API that can be used across mobile, server and desktop models to render images.
Capture Screen, Audio, Cursor, Mouse Clicks and Keystrokes
The high-speed OpenGL, OpenCL, OpenAL, OpenXR, GLFW, SDL, Vulkan, Assimp, WebGPU, and DirectX bindings library your mother warned you about.
inkle's open source scripting language for writing interactive narrative.
Chocolatey - the package manager for Windows
Yet Another System Region and Language Simulator
A modular, scalable and ultra-fast open-source all-in-one eCommerce platform built on ASP.NET Core 10
.NET MAUI is the .NET Multi-platform App UI, a framework for building native device applications spanning mobile, tablet, and desktop.
EF Core is a modern object-database mapper for .NET. It supports LINQ queries, change tracking, updates, and schema migrations.
UI automation library for .Net
Sucrose is a versatile wallpaper engine that brings life to your desktop with a wide range of interactive wallpapers.
Google's Material Design in XAML & WPF, for C# & VB.Net.
The official repo for the design of the C# programming language
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.
Contains some simple and commonly used WPF controls
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.
FusionCache is an easy to use, fast and robust hybrid cache with advanced resiliency features.
TranslatedBilibili Downloader. A command-line Bilibili downloader.
Git Extensions is a standalone UI tool for managing git repositories. It also integrates with Windows Explorer and Microsoft Visual Studio (2015/2017/2019).
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.
A toolkit for developing high-performance HTTP reverse proxy applications.
MIT-licensed, COM-free .NET libraries for creating, reading, editing, converting, rendering, and extracting Office, PDF, email, OneNote, and text formats.
A C#/.NET library to run LLM (🦙LLaMA/LLaVA) on your local device efficiently.
ClosedXML is a .NET library for reading, manipulating and writing Excel 2007+ (.xlsx, .xlsm) files. It aims to provide an intuitive and user-friendly interface to dealing with the underlying OpenXML API.
Cloud Native application framework for .NET
ASP.NET Core eCommerce software. nopCommerce is a free and open-source shopping cart.
✨ Open Source, Privacy-First and Simple Analytics for Mobile, Desktop and Web Apps
Free Open Source Enterprise Grade RPA
Microsoft Fluent UI Blazor components library. For use with ASP.NET Core Blazor applications
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.
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.
Orchard Core is an open-source modular and multi-tenant application framework built with ASP.NET Core, and a content management system (CMS) built on top of that framework.
OpenCV wrapper for .NET
Automate SSL/TLS certificates on Windows with ease
High-performance C# ECS
Extremely Fast MessagePack Serializer for C#(.NET, .NET Core, Unity, Xamarin). / msgpack.org[C#]
Flexible and versatile OAuth 2.0/OpenID Connect stack for .NET
A fast, powerful, CommonMark compliant, extensible Markdown processor for .NET
A .NET source generator for generating object mappings. No runtime reflection.
A simple app for tracking monthly spending and working towards financial goals.
Reduces eye strain by adjusting screen gamma based on the current time
A 2D online multiplayer game taking place in a submarine travelling through the icy depths of Jupiter's moon Europa.
Enterprise-grade feature flag platform that you can self-host. Get started - free.
SteamKit2 is a .NET library designed to interoperate with Valve's Steam network. It aims to provide a simple, yet extensible, interface to perform various actions on the network.
Powerful .NET library for benchmarking
Tool to find metadata and hidden information in the documents.
A light-weight REST API development framework for ASP.NET 8 and newer.
Polly is a .NET resilience and transient-fault-handling library that allows developers to express policies such as Retry, Circuit Breaker, Timeout, Bulkhead Isolation, and Fallback in a fluent and thread-safe manner. From version 6.0.1, Polly targets .NET Standard 1.1 and 2.0+.
WPF is a .NET Core UI framework for building Windows desktop applications.
Core functionality needed to create .NET Core projects, that is shared between Visual Studio and CLI
A simple library for creating state machines in C# code
Umbraco is a free and open source .NET content management system helping you deliver delightful digital experiences.
.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 easy way to perform background job processing in .NET and .NET Core applications. No Windows Service or separate process required
LiteDB - A .NET NoSQL Document Store in a single data file
Pure C# 3D real time physics simulation library, now with a higher version number.
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.
Prism is a framework for building loosely coupled, maintainable, and testable XAML applications in WPF, Xamarin Forms, and Uno / Win UI Applications..
Desktop implementation of Steam's mobile authenticator app
A modern, cross-platform, 2D Graphics library for .NET
Open XML SDK by Microsoft
Mutation testing for .NET core and .NET framework!
:card_index: A simple fake data generator for C#, F#, and VB.NET. Based on and ported from the famed faker.js.
:bathtub: Clean Code concepts and tools adapted for .NET
A popular .NET validation library for building strongly-typed validation rules.
A cross-platform .NET library for IMAP, POP3, and SMTP.
Microsoft Azure PowerShell
CSharpier is an opinionated code formatter for c#.
The P programming language.
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/.
Abstraction layer over YouTube's internal API
Open-source, non-custodial, privacy preserving Bitcoin wallet for Windows, Linux, and Mac.
A fast, powerful, safe and lightweight scripting language and engine for .NET
A fast, fun and stimulating object to object Mapper
An open-source platform for Visual AI.
High performance Lua interpreter implemented in C# for .NET and Unity
Everything search plugin for PowerToys Run
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 C# architecture test library to specify and assert architecture rules in C# for automated testing.
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.
Cosmos is an operating system "construction kit". Build your own OS using managed languages such as C#, VB.NET, and more!
Central repository for tools, tutorials, resources, and documentation for robotics simulation in Unity.
Lightweight workflow engine for .NET Standard
.NET Transactional Document DB and Event Store on PostgreSQL
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.