DocumentFormat.OpenXml by: Microsoft

The Open XML SDK provides tools for working with Office Word, Excel, and PowerPoint documents. It supports scenarios such as: - High-performance generation of word-processing documents, spreadsheets, and presentations. - Populating content in Word files from an XML data source. - Splitting up (shredding) a Word or PowerPoint file into multiple files, and combining multiple Word/PowerPoint files into a single file. - Extraction of data from Excel documents. - Searching and replacing content in Word/PowerPoint using regular expressions. - Updating cached data and embedded spreadsheets for charts in Word/PowerPoint. - Document modification, such as removing tracked revisions or removing unacceptable content from documents.

Enums.NET by: Tyler Brinkley

Enums.NET is a high-performance type-safe .NET enum utility library

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.

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.

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.

FluentValidation by: Jeremy Skinner

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

FluentValidation.DependencyInjectionExtensions by: Jeremy Skinner

Dependency injection extensions for FluentValidation

Geo by: Simon Bartlett

A geospatial library for .NET

GeoTimeZone by: Matt Johnson-Pint Simon Bartlett

Provides an IANA time zone identifier from latitude and longitude coordinates.

Google.Api.Gax by: Google LLC

Support classes for Google API client libraries

Google.Api.Gax.Rest by: Google LLC

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

Google.Protobuf by: Google Inc.

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

Grpc.Core.Api by: The gRPC Authors

gRPC C# Surface API

Grpc.Net.Client by: The gRPC Authors

.NET client for gRPC

Grpc.Net.Common by: The gRPC Authors

Infrastructure for common functionality in gRPC

HtmlAgilityPack by: ZZZ Projects Simon Mourrier Jeff Klawiter Stephan Grell

This is an agile HTML parser that builds a read/write DOM and supports plain XPATH or XSLT (you actually don't HAVE to understand XPATH nor XSLT to use it, don't worry...). It is a .NET code library that allows you to parse "out of the web" HTML files. The parser is very tolerant with "real world" malformed HTML. The object model is very similar to what proposes System.Xml, but for HTML documents (or streams).