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.

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.

Google APIs Client Library (Contact me whenever new versions are available!)

Fody by: The Fody Team

Extensible tool for weaving .net assemblies.

GoogleCaptchaComponent by: Babak Taremi

A comprehensive Blazor component for Google reCAPTCHA integration. Supports both v2 and v3, server-side validation, multiple themes, and works with Blazor Server and WebAssembly.

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!

Grpc.Net.Client by: The gRPC Authors

.NET client for gRPC

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.

Grpc.Core by: The gRPC Authors

C# implementation of gRPC based on native gRPC C-core library. Note that the Grpc.Core implementation of gRPC for C# is in maintenance mode and will be replaced by grpc-dotnet in the future. See https://grpc.io/blog/grpc-csharp-future/ for details.

DotNetZip by: Dino Chiesa

DotNetZip is an easy-to-use, FAST, FREE class library and toolset for manipulating zip files or folders.

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.

Grpc by: The gRPC Authors

Metapackage for gRPC C#

Grpc.Net.Common by: The gRPC Authors

Infrastructure for common functionality in gRPC

Grpc.Core.Api by: The gRPC Authors

gRPC C# Surface API

FluentNHibernate by: James Gregory and contributors

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

Google.Protobuf by: Google Inc.

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

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.