ardalis/CleanArchitecture
Clean Architecture Solution Template: A proven Clean Architecture Template for ASP.NET Core 9
umbraco/Umbraco-CMS
Umbraco is a free and open source .NET content management system helping you deliver delightful digital experiences.
AvaloniaUI/Avalonia
Develop Desktop, Embedded, Mobile and WebAssembly apps with C# and XAML. The most popular .NET UI client technology
dotnet/roslyn
The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.
dotnet/maui
.NET MAUI is the .NET Multi-platform App UI, a framework for building native device applications spanning mobile, tablet, and desktop.
lepoco/wpfui
WPF UI provides the Fluent experience in your known and loved WPF framework. Intuitive design, themes, navigation and new immersive controls. All natively and effortlessly.
icsharpcode/ILSpy
.NET Decompiler with support for PDB generation, ReadyToRun, Metadata (&more) - cross-platform!
space-wizards/space-station-14
A multiplayer game about paranoia and chaos on a space station. Remake of the cult-classic Space Station 13.
dotnet/msbuild
The Microsoft Build Engine (MSBuild) is the build platform for .NET and Visual Studio.
QuestPDF/QuestPDF
Generate and edit PDF documents in your .NET applications using the open-source QuestPDF library and its C# Fluent API. Build invoices, reports and data exports with ease.
microsoft/testfx
This repository holds the source code of Microsoft.Testing.Platform (MTP), a lightweight alternative to VSTest, as well as MSTest adapter and framework.
dotnet/macios
.NET for iOS, Mac Catalyst, macOS, and tvOS provide open-source bindings of the Apple SDKs for use with .NET managed languages such as C#
radzenhq/radzen-blazor
Radzen Blazor is the most sophisticated free UI component library for Blazor, featuring 100+ native components including DataGrid, Scheduler, Charts, and advanced theming with full support for Material Design and Fluent UI.
microsoft/mcp
Catalog of official Microsoft MCP (Model Context Protocol) server implementations for AI-powered data access and tool integration