Develop Desktop, Embedded, Mobile and WebAssembly apps with C# and XAML. The most popular .NET UI client technology

.NET debugger and assembly editor

Dapper - a simple object mapper for .Net

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 …

Simple REST and HTTP API Client for .NET

A popular .NET validation library for building strongly-typed validation rules.

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.

Humanizer meets all your .NET needs for manipulating and displaying strings, enums, dates, times, timespans, numbers and quantities

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…

📷 A modern, cross-platform, 2D Graphics library for .NET

WPF is a .NET Core UI framework for building Windows desktop applications.

C# pure functional programming framework - come and get declarative!

NLog - Flexible and Structured Logging for various .NET Platforms

📚 📈 Plug-and-play class-library project of standard Data Structures and Algorithms in C#

An addictive .NET IoC container

Machine learning, computer vision, statistics and general scientific computing for .NET

Extensible tool for weaving .net assemblies

#ziplib is a Zip, GZip, Tar and BZip2 library written entirely in C# for the .NET platform.

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 e…

visualized crawler & ETL IDE written with C#/WPF

A better date and time API for .NET

Html Agility Pack (HAP) is a free and open-source HTML parser written in C# to read/write DOM and supports plain XPATH or XSLT. It is a .NET code library that allows you to parse "out of the web" H…

the ninja of .net dependency injectors

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…

Exceptionless application

CacheManager is an open source caching abstraction layer for .NET written in C#. It supports various cache providers and implements many advanced features.

Pluggable foundation blocks for building distributed apps.

Awesome icon packs for WPF and UWP in one library

C# scripting platform

A small, happy, dynamic MicroORM for .NET that will love you forever.