Top 20 NuGet parsing Packages

Command-line parsing API and utilities for console applications. Commonly used types: McMaster.Extensions.CommandLineUtils.CommandLineApplication McMaster.Extensions.CommandLineUtils.CommandOption McMaster.Extensions.CommandLineUtils.IConsole McMaster.Extensions.CommandLineUtils.Prompt McMaster.Ex...
The runtime library for parsers generated by the C# target of ANTLR 4. This package supports projects targeting .NET 2.0 or newer, and built using Visual Studio 2008 or newer.
The C# target of the ANTLR 4 parser generator for Visual Studio 2010+ projects. This package supports projects targeting .NET 2.0 or newer, and built using Visual Studio 2010 or newer.
The .NET Core C# ANTLR 4 runtime from the ANTLR Organization
Terse syntax C# command line parser for .NET. For FSharp support see CommandLineParser.FSharp. The Command Line Parser Library offers to CLR applications a clean and concise API for manipulating command line arguments and related tasks.
The C# target of the ANTLR 4 parser generator for Visual Studio 2010+ projects. This package supports projects targeting .NET 2.0 or newer, and built using Visual Studio 2010 or newer.
A .net wrapper for the ua-parser library
The runtime library for parsers generated by the C# target of ANTLR 3. This package supports projects targeting .NET 2.0 or newer, and built using Visual Studio 2008 or newer.
Contains general interfaces and classes for working with FHIR data, regardless of FHIR version or POCO's
Class library that defines a script language and an object abstraction of computable elements. The library helps application parse and execute script. Script is extensible, and it is easy for modules to extend the script engine.
Terse syntax C# command line parser for .NET. For FSharp support see CommandLineParser.FSharp. The Command Line Parser Library offers to CLR applications a clean and concise API for manipulating command line arguments and related tasks.
Parse, generate or validate EDI documents.
Contains script extensions for the persistence layer. Allows for searching for, creating, updating and deleting objects in the object database from script.
Contains script extensions for graphs.
Turn unstructured HTML pages into structured data. The OpenScraping library can extract information from HTML pages using a JSON config file with xPath rules. It can scrape even multi-level complex objects such as tables and forum posts.
Improved xNet library for .NET Framework 4.5.2, 4.6.2, 4.7.1, 4.7.2 & .NET Core 2.0-2.2
Parse, generate or validate EDI documents.
Reads and writes CSV, fixed-length and other flat file formats with a focus on schema definition, configuration and speed. Supports mapping directly between files and classes.
A simple, but very powerful, command-line parsing utility that automatically populates properties in your argument object. Handles data type conversions and data validation. Provides help text optimized for the console. See the project WIKI on Git for full list of features and documentation.
A natural language date parser for .Net. A port of Ruby's chronic.