FastMember by: Marc Gravell

In .NET reflection is slow... well, kinda slow. If you need access to the members of an arbitrary type, with the type and member-names known only at runtime - then it is frankly hard (especially for DLR types). This library makes such access easy and fast.

FlaUI.Core by: Roemer

Library with base elements used in the concrete implementations of FlaUI.

FlaUI.UIA2 by: Roemer

Library to use FlaUI with UIA2.

FlaUI.UIA3 by: Roemer

Library to use FlaUI with UIA3.

FluentAssertions by: Dennis Doomen, Jonas Nyrup, Xceed

A very extensive set of extension methods that allow you to more naturally specify the expected outcome of a TDD or BDD-style unit tests. Works with .NET Standard 2.0 and higher, .NET Framework 4.7 and higher and .NET 6 and higher. Supports the unit test frameworks MSTest2, NUnit3, NUnit4, XUnit2, XUnit3, MSpec and TUnit. IMPORTANT: This version is free for open-source projects and non-commercial use, but commercial use requires [a paid license](https://xceed.com/products/unit-testing/fluent-assertions/). Check out the [license page](LICENSE) for more information.

Fody by: Fody

Extensible tool for weaving .net assemblies.

Gee.External.Capstone by: Ahmed Garhy (@9ee1)

Capstone.NET is an opinionated .NET Core and a .NET Framework binding for the Capstone disassembly framework. It is written in C#, supports Capstone 4, and has a friendly and simple type safe API that is ridiculously easy to learn and quick to pick up.

geometry4Sharp by: geometry4Sharp

C# library for 2D/3D geometric computing and triangle mesh processing forked from Geometry3Sharp

gong-wpf-dragdrop by: Jan Karger, Steven Kirk, mitchell.jon

An easy to use drag'n'drop framework for WPF applications.

Google.Protobuf by: Google Inc.

C# runtime library for Protocol Buffers - Google's data interchange format.

HelixToolkit by: JeremyAnsel, Lunci, objo

Helix Toolkit is a collection of 3D components for .NET.

Humanizer.Core by: Claire Novotny, Mehdi Khalili

Humanizer core package that contains the library and the neutral language (English) resources

Independentsoft.Office by: Independentsoft

Independentsoft.Office is Office file format API for .NET Framework, .NET Core, .NET Standard, Mono, Xamarin. Supports Word, Excel, PowerPoint, OpenOffice file formats.

Independentsoft.Office.Odf by: Independentsoft

Independentsoft.Office.Odf is Open Document Format API for .NET Framework, .NET Core, .NET Standard, Mono, Xamarin.

Independentsoft.Office.Spreadsheet by: Independentsoft

Independentsoft.Office.Spreadsheet is Excel file format API for .NET Framework, .NET Core, .NET Standard, Mono, Xamarin.

Interop.UIAutomationClient by: Roemer

The UI Automation COM-to-.NET adapter makes it possible to use the new Windows Automation API 3.0 COM interfaces, with their improved reliability and performance, while still using the same System.Windows.Automation classes as in earlier versions of UI Automation

IoC.Container by: NikolayP

Simple, powerful and fast expressions based Inversion of Control container for .NET.

JetBrains.Annotations by: JetBrains

JetBrains.Annotations help reduce false positive warnings, explicitly declare purity and nullability in your code, deal with implicit usages of members, support special semantics of APIs in ASP.NET and XAML frameworks and otherwise increase accuracy of JetBrains Rider and ReSharper code inspections. All usages of JetBrains.Annotations attributes are erased from metadata by default, which means no actual binary reference to 'JetBrains.Annotations.dll' assembly is produced. If you need to preserve these attributes in metadata, just define 'JETBRAINS_ANNOTATIONS' conditional compilation symbol in your projects.

JetBrains.dotTrace.CommandLineTools.windows-x64 by: JetBrains

The dotTrace console tool lets you start a profiling session and get performance snapshots from the command line. This can be helpful in various scenarios, like: * profiling an application on a remote server, * automating the process of gathering performance snapshots, for example, as a part of your continuous integration builds, * speeding up profiling routines by creating profiling scripts. The tool supports profiling of .NET Framework, .NET Core, Mono, and Unity applications. The tool is a JetBrains Redistributable Product. This means it is free and can be freely redistributed. Note that it does not require JetBrains dotTrace to be installed on your machine. At the same time, to analyze the collected snapshots, you will need the standalone version of JetBrains dotTrace or JetBrains Rider.

Libuv by: Libuv

Multi-platform support library with a focus on asynchronous I/O.