envdte90a by: Microsoft

A member of the Visual Studio SDK

ExtendedNumerics.BigDecimal by: Adam White Jan Christoph Bernack Rick Harker

An arbitrary precision decimal (base 10) floating point number type using a mantissa and exponent. Supports nth roots, trigonometric functions, logarithms, natural e, pi, etc.

FaceIT.Hangfire.Tags by: Erwin Bovendeur

Add tags to Hangfire backgroundjobs

FakeItEasy by: Patrik Hägne FakeItEasy contributors

It's faking amazing! The easy mocking library for .NET that works great in C# and VB.NET alike. No need to know the difference between a stub, a mock or a spy, everything's a fake! The easy to use, refactoring friendly API makes faking a breeze.

FakeXrmEasy by: @jordimontana

Utilities to streamline unit testing in Dynamics CRM 2011 by faking the IOrganizationService against an In-Memory context which runs blazingly fast.

FakeXrmEasy.365 by: @jordimontana

Utilities to streamline unit testing in Dynamics CRM 365 by faking the IOrganizationService against an In-Memory context which runs blazing fast.

Fare by: Nikos Baxevanis

.NET port of dk.brics.automaton - Project Fare is an effort to bring a DFA/NFA (finite-state automata) implementation from Java to .NET. There are quite a few implementations available in other languages today. This project aims to fill the gap in .NET.

FirebaseAdmin by: Google Inc.

Firebase Admin SDK enables server-side .NET developers to integrate Firebase into their services and applications.

FluentAssertions by: Dennis Doomen Jonas Nyrup

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. Targets .NET Framework 4.5 and 4.7, as well as .NET Core 2.0, .NET Core 3.0, .NET Core 2.1, .NET Standard 1.3, 1.6, 2.0 and 2.1. Supports the unit test frameworks MSTest, MSTest2, Gallio, NUnit, XUnit, MBUnit, MSpec, and NSpec.

FluentCommandLineParser by: siywilliams

A simple, strongly typed .NET C# command line parser library using a fluent easy to use interface

FluentFTP by: Robin Rodricks FluentFTP Contributors

An FTP and FTPS client for .NET & .NET Standard, optimized for speed. Provides extensive FTP commands, File uploads/downloads, SSL/TLS connections, Directory listing parsing, File hashing/checksums, File permissions/CHMOD, FTP proxies, FXP transfers, UTF-8 support, Async/await support, Powershell support and more. Written entirely in C#, with no external dependencies.

FluentScheduler by: Jim Geurts <jim@biacreations.com> Talles L <talleslasmar@gmail.com> & further contributors

Automated job scheduler with fluent interface.

FluentValidation by: Jeremy Skinner

A validation library for .NET that uses a fluent interface to construct strongly-typed validation rules.

font-awesome by: Dave Gandy

Font Awesome gives you scalable vector icons that can instantly be customized — size, color, drop shadow, and anything that can be done with the power of CSS.

FsUnit by: Ray Vernagus Daniel Mohl Sergey Tihon Constantin Tews

FsUnit is a set of extensions that add special testing syntax to NUnit.

Google.Api.Gax by: Google Inc.

Support classes for Google API client libraries

Google.Api.Gax.Rest by: Google Inc.

Common Protocol Buffer messages for Google APIs

Google.Apis by: Google LLC

The Google APIs Client Library is a runtime client for working with Google services. The library supports service requests, media upload and download, etc. Supported Platforms: - .NET Framework 4.5+ - NetStandard1.3, providing .NET Core support

Google.Apis.Auth by: Google LLC

The Google APIs Client Library is a runtime client for working with Google services. This package includes auth components like user-credential, authorization code flow, etc. for making authenticated calls using the OAuth2 spec. Supported Platforms: - .NET Framework 4.5 - .NET Framework 4.6.1 - .Net Standard 1.3 - .Net Standard 2.0

Google.Apis.Core by: Google LLC

The Google APIs Core Library contains the Google APIs HTTP layer, JSON support, Data-store, logging and so on. Supported Platforms: - .NET Framework 4.5+ - NetStandard1.3, providing .NET Core support