EF Core is a modern object-database mapper for .NET. It supports LINQ queries, change tracking, updates, and schema migrations.

A .NET library that makes it easier to create beautiful console applications.

Build cross platform desktop apps with ASP.NET Core (Razor Pages, MVC, Blazor).

Library for interacting with command-line interfaces

The .NET library for ImageMagick

Abstraction layer over YouTube's internal API

Command line parsing, invocation, and rendering of terminal output.

A high performance implementation of Mediator pattern in .NET using source generators.

A generalised Result object implementation for .NET/C#

App Metrics is an open-source and cross-platform .NET library used to record and report metrics within an application.

PolySharp provides generated, source-only polyfills for C# language features, to easily use all runtime-agnostic features downlevel. Add a reference, set your C# version to latest and have fun! 🚀

.NET for Apache® Spark™ makes Apache Spark™ easily accessible to .NET developers.

A set of .NET libraries for Windows implementing PInvoke calls to many native Windows APIs with supporting wrappers.

An unofficial C#/.NET SDK for accessing the OpenAI GPT-3 API

Fast, cross-platform and reliable multipart downloader with asynchronous progress events for .NET applications. If you want Downloader Desktop application see this: https://github.com/bezzad/downloader.desktop

Class-first framework for building command-line interfaces

GeneticSharp is a fast, extensible, multi-platform and multithreading C# Genetic Algorithm library that simplifies the development of applications using Genetic Algorithms (GAs).

The official repository for MonoTorrent, a bittorrent library for .NET

The Official Twilio SendGrid C#, .NetStandard, .NetCore API Library

Tweetinvi, an intuitive Twitter C# library for the REST and Stream API. It supports .NET, .NETCore, UAP (Xamarin)...