#csharp

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

Apache Thrift

Aspire is the tool for code-first, extensible, observable dev and deploy.

Microsoft Fluent UI Blazor components library. For use with ASP.NET Core Blazor applications

WinUI: a modern UI framework with a rich set of controls and styles to build dynamic and high-performing Windows applications.

The official C# SDK for Model Context Protocol servers and clients. Maintained in collaboration with Microsoft.

The official .NET library for the OpenAI API

Pulumi - Infrastructure as Code in any programming language 🚀

Umbraco is a free and open source .NET content management system helping you deliver delightful digital experiences.

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.

An open source Valkey client library that supports Valkey, and Redis open source 6.2, 7.0 and 7.2. Valkey GLIDE is designed for reliability, optimized performance, and high-availability, for Valkey and Redis OSS based applications. GLIDE is a multi language client library, written in Rust with programming language bindings, such as Java and Python

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.

The Free Software Media System - Server Backend & API

The Windows App SDK empowers all Windows desktop apps with modern Windows UI, APIs, and platform features, including back-compat support, shipped via NuGet.

ACID Document Database

The main repository for the development of the evolution game Thrive.

Apache Avro is a data serialization system.

The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.

OpenAPI based HTTP Client code generator

Multilingual neural TTS (6 languages: JA/EN/ZH/ES/FR/PT, code supports SV) — C++, C#, Rust, Go, Python, npm (WASM). VITS + Prosody, streaming, CUDA/CoreML/DirectML. pip install piper-plus | npm install piper-plus | cargo install piper-plus-cli

Bitwarden infrastructure/backend (API, database, Docker, etc).

.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#

The Workflow Engine for .NET

.NET version of the Playwright testing and automation library.

The Official C# .NET Driver for MongoDB

An Amazon Web Services (AWS) Pulumi resource package, providing multi-language access to AWS

A framework for building messaging apps with .NET and C#.

One framework for creating powerful cross-platform games.

Blazor Component Library based on Material Design principles. Do more with Blazor, utilizing CSS and keeping JavaScript to a bare minimum.

NLog - Flexible and Structured Logging for various .NET Platforms