Extended.Wpf.Toolkit by: Xceed

Extended WPF Toolkit is the number one collection of WPF controls, components and utilities for creating next generation Windows applications. Provides 48 controls, all offered under the Xceed Software Inc Community License. v5.1 provides 12 bug fixes and improvements. Documentation, source, and discussions are hosted on Github at https://github.com/xceedsoftware/wpftoolkit. Check out the Plus Edition to support the project, get more controls and features, and work with a version a few releases ahead of the free releases.

FastExpressionCompiler.src by: Maksim Volkau

FastExpressionCompiler is 10-40x times faster than Expression.Compile()

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.

FastMember.Signed 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.

Fizzler by: Atif Aziz, Colin Ramsay

Fizzler is a W3C Selectors parser and generic selector framework for document hierarchies.

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.

Fluent.Ribbon by: Bastian Schmidt

Fluent.Ribbon is a library that implements an Office-like user interface for the Windows Presentation Foundation (WPF). It provides controls such as RibbonTabControl, Backstage, Gallery, QuickAccessToolbar, ScreenTip and so on.

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, MSTest3, MSTest4, 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.

Fluid.Core by: Sebastien Ros

Fluid is a template engine based on the Liquid markup, with focus on performance and .NET programming patterns.

Fody by: The Fody Team

Extensible tool for weaving .net assemblies.

FodyHelpers by: The Fody Team

Helpers for Fody.

FodyPackaging by: The Fody Team

NuGet packaging Fody repositories

FontAwesome5 by: Codinion

WPF (.Net and .Net Core) and UWP controls for the iconic SVG, font, and CSS toolkit Font Awesome 5. For examples https://github.com/MartinTopfstedt/FontAwesome5 Font-Awesome Version: 5.15.4

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

Capstone.NET is a .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.

geometry3Sharp by: Ryan Schmidt

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

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.