DotLiquid by: Tim Jones, Alessandro Petrelli

DotLiquid is a templating system ported to the .NET framework from Ruby’s Liquid Markup.

DotNet.Testcontainers by: Andre Hofmeister and contributors

A lightweight library to run tests with throwaway instances of Docker containers.

EFCore.NamingConventions by: Shay Rojansky

Naming Conventions for Entity Framework Core Tables and Columns.

EntityFramework by: Microsoft

Entity Framework 6 (EF6) is a tried and tested object-relational mapper for .NET with many years of feature development and stabilization.

EntityFrameworkCore.Exceptions.Common by: Giorgi Dalakishvili

Handle database errors easily when working with Entity Framework Core. Catch specific exceptions such as UniqueConstraintException, CannotInsertNullException, MaxLengthExceededException, NumericOverflowException instead of generic DbUpdateException This is a base package for database specific packages. Install one of the specific packages instead of this

EPPlus by: EPPlus Software AB

A spreadsheet library for .NET framework and .NET core

FastEndpoints by: FastEndpoints

A light-weight REST Api framework for ASP.Net 6 and newer that implements REPR (Request-Endpoint-Response) Pattern.

FastEndpoints.Attributes by: FastEndpoints

Attributes used by FastEndpoints.

FastEndpoints.Core by: FastEndpoints

Core service resolution and other shared functionality of FastEndpoints.

FastEndpoints.Messaging.Core by: FastEndpoints

Core messaging interfaces used by FastEndpoints.

FastExpressionCompiler.src by: Maksim Volkau

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

FluentAssertions by: Dennis Doomen

A very extensive set of extension methods that allow you to more naturally specify the expected outcome of a TDD or BDD-style unit test. Runs on 4.0 and 4.5 (Desktop and Windows Store), CoreCLR, Silverlight 5 and Windows Phone 8, 8.1 and 8.1 for Silverlight. Supports the unit test frameworks NUnit, XUnit, XUnit2, MBUnit, Gallio, MSpec, and NSpec.

FluentMigrator.Abstractions by: Sean Chambers, Josh Coffman, Tom Marien, Mark Junker

FluentMigrator is a database migration framework for .NET written in C#. The basic idea is that you can create migrations which are simply classes that derive from the Migration base class and have a Migration attribute with a unique version number attached to them. Upon executing FluentMigrator, you tell it which version to migrate to and it will run all necessary migrations in order to bring your database up to that version. In addition to forward migration support, FluentMigrator also supports different ways to execute the migrations along with selective migrations called profiles and executing arbitrary SQL.

FluentMigrator.Extensions.Postgres by: Sean Chambers, Josh Coffman, Tom Marien, Mark Junker, John Zabroski

FluentMigrator is a database migration framework for .NET written in C#. The basic idea is that you can create migrations which are simply classes that derive from the Migration base class and have a Migration attribute with a unique version number attached to them. Upon executing FluentMigrator, you tell it which version to migrate to and it will run all necessary migrations in order to bring your database up to that version. In addition to forward migration support, FluentMigrator also supports different ways to execute the migrations along with selective migrations called profiles and executing arbitrary SQL.

FluentValidation by: Jeremy Skinner

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

Fluid.Core by: Sebastien Ros

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

FreeSpire.Office by: win7x64

With Free Spire.Office for .NET, developers can create a wide range of applications. It enables developers to open, create, modify, convert, print, View MS Word, Excel, PowerPoint and PDF documents. Furthermore, it allows users to export data to popular files such as MS Word/Excel/RTF/Access, PowerPoint, PDF, XPS, HTML, XML, Text, CSV, DBF, Clipboard, SYLK, etc. As an independent Office .NET component, Free Spire.Office doesn't need Microsoft Office to be installed on neither the development nor target systems. Friendly reminder: Free Spire.Office has no any warning message but it has page limitation for the Word, Excel, PowerPoint and PDF documents. When reading and writing word documents, it is limited to 500 paragraphs and 25 tables. When converting word documents to PDF and XPS files, you can only get the first 3 page of PDF file. When reading and writing Excel files, it is limited to 5 sheets per workbook and 200 rows per sheet. When reading and writing PowerPoint documents, it is limited to 10 presentation slides. When loading and editing PDF files, it is limited to 10 pages of PDF. Free Spire.Doc for .NET Developers can use it to generate, read, write, save, print and convert documents on any .NET applications. The featured function, conversion allows converting Word documents (Word 97-2003, Word 2007, Word 2010, word 2013) to commonly used file format, such as XML, RTF, TXT, PDF, XPS, EPUB, HTML and Image etc. Free Spire.DocViewer for .NET Free Spire.DocViewer for .NET can help developers quickly open Word 97-2003, Word 2007, Word 2010 and Word 2013. When Printing Word Documents, print pages can be set up or be odd number, even number or a custom number scale. In addition, developers can view documents in reading or printing mode and display documents with page up/down, and zoom in/out. Free Spire.XLS for .NET Free Spire.XLS for .NET enables developers to generate Excel workbook from scratch, or load a workbook from either folder or file stream.

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.

Gherkin by: Cucumber Ltd, Gaspar Nagy

Cross-platform parser for the Gherkin language, used by Cucumber, SpecFlow and other Cucumber-based tools to parse feature files.

Google.Protobuf by: Google Inc.

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