.NET MAUI is the .NET Multi-platform App UI, a framework for building native device applications spanning mobile, tablet, and desktop.

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

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 …

Mono open source ECMA CLI, C# and .NET implementation.

Json.NET is a popular high-performance JSON framework for .NET

A convention-based object-object mapper in .NET.

Incredibly simple real-time web for .NET

Open-source platform for building cross-platform native Mobile, Web, Desktop and Embedded apps quickly. Create rich, C#/XAML, single-codebase apps from any IDE. Hot Reload included! 90m+ NuGet Down…

ML.NET is an open source and cross-platform machine learning framework for .NET.

The automatic type-safe REST library for .NET Core, Xamarin and .NET. Heavily inspired by Square's Retrofit library, Refit turns your REST API into a live interface.

An advanced, composable, functional reactive model-view-viewmodel framework for all .NET platforms that is inspired by functional reactive programming. ReactiveUI allows you to abstract mutable sta…

The Reactive Extensions for .NET

The Windows Community Toolkit is a collection of helpers, extensions, and custom controls. It simplifies and demonstrates common developer tasks building .NET apps with UWP and the Windows App SDK …

Xamarin.Forms is no longer supported. Migrate your apps to .NET MAUI.

Fluent URL builder and testable HTTP client for .NET

Simple, powerful, cross-platform SQLite client and ORM for .NET

The .NET MVVM framework for cross-platform solutions, including Android, iOS, MacCatalyst, macOS, tvOS, WPF, WinUI

A helper library for async/await.

Source from the Microsoft .NET Reference Source that represent a subset of the .NET Framework

Abstraction layer over YouTube's internal API

High performance understanding for stack traces (Make error logs more productive)

Write C# apps with a text editor, nuget and the power of Roslyn!

An asynchronous, persistent key-value store created for writing desktop and mobile applications, based on SQLite3. Akavache is great for both storing important data as well as cached local data tha…

Create, update and deploy Nuget Packages with a GUI

Definitely Fastest and Zero Allocation JSON Serializer for C#(NET, .NET Core, Unity, Xamarin).

A collection of .NET for Android sample projects

Create cross-platform (Xamarin, Windows, ...) simple charts.

Plugins for Xamarin

.NET for Android provides open-source bindings of the Android SDK for use with .NET managed languages such as C#

Injects INotifyPropertyChanged code into properties at compile time