Examine by: Shannon Deminick

Examine is a wrapper for getting a Lucene index up and running for any type of data and comes with an API to search it. You can either use the Fluent API that the library comes with or use raw Lucene query syntax. The indexing is configurable and will allow both synchronous and asynchronous indexing and everything works happily in web projects too.

GeoAPI.CoordinateSystems by: NetTopologySuite Team

GeoAPI.NET project provides a common framework based on OGC/ISO standards to improve interoperability among .NET GIS projects.

FSharp.Core by: Microsoft and F# Software Foundation

FSharp.Core redistributables from Visual F# 4.1.0 Supported Platforms: .NET 2.0 (net20) .NET 4.0 (net40) .NET 4.5+ (net45) .NET Portable Profile 7 (portable-net45+netcore45) .NET Portable Profile 47 (portable-net45+sl5+netcore45) .NET Portable Profile 78 (portable-net45+netcore45+wp8) .NET Portable Profile 259 (portable-net45+netcore45+wpa81+wp8) .NET Standard 1.6 (netstandard1.6) MonoAndroid, MonoTouch, Xamarin.iOS (portable-net45+monoandroid10+monotouch10+xamarinios10) XamarinMac mobile (xamarinmac20)

FluentValidation by: Jeremy Skinner

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

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.

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.

Google.Apis by: Google Inc.

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 - Windows Store apps - Windows Phone 8 and 8.1 - Portable Class Libraries

Fody by: The Fody Team

Extensible tool for weaving .net assemblies.

GemBox.Spreadsheet by: GemBox

GemBox.Spreadsheet is a .NET component that enables you to read, write, convert, and print spreadsheet files (XLSX, XLS, XLSB, CSV, HTML, and ODS) from .NET applications. With GemBox.Spreadsheet you get a fast and reliable component that's easy to use and doesn't depend on Microsoft Excel. It requires only .NET and it's much faster than Microsoft Office Automation!

gherkin by: aslakhellesoy

A fast lexer and parser for the Gherkin language based on Ragel

Elasticsearch.Net by: Elasticsearch Inc. and contributors

Exposes all the api endpoints but leaves you in control of building the request and response bodies. Comes with built in cluster failover/connection pooling support.

GeoAPI by: NetTopologySuite Team

GeoAPI.NET project provides a common framework based on OGC/ISO standards to improve interoperability among .NET GIS projects.

ExcelNumberFormat by: ExcelNumberFormat developers

.NET library to parse ECMA-376 number format strings and format values like Excel and other spreadsheet softwares.

DotNetZip by: Henrik/Dino Chiesa

A fork of the DotNetZip project without signing with a solution that compiles cleanly. This project aims to follow semver to avoid versioning conflicts. DotNetZip is a FAST, FREE class library and toolset for manipulating zip files. Use VB, C# or any .NET language to easily create, extract, or update zip files.

GeoAPI.Core by: NetTopologySuite Team and Fabrício Godoy

GeoAPI.NET project provides a common framework based on OGC/ISO standards to improve interoperability among .NET GIS projects.

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.

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.

FluentNHibernate by: James Gregory and contributors

Fluent, XML-less, compile safe, automated, convention-based mappings for NHibernate.

ExcelDataReader by: ExcelDataReader developers

Lightweight and fast library written in C# for reading Microsoft Excel files (XLS, XLSX).

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.