Top 20 NuGet parsing Packages

The C# target of the ANTLR 3 parser generator. This package supports projects targeting .NET 2.0 or newer, and built using Visual Studio 2010 or newer.
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...
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 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.
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 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.
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.
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.
Tools for FsLex/FsYacc lexer/parser generation tools
Cauldron.Consoles is a Cauldron.Core based parameter parser which supports grouping of parameters in execution groups. It is also supports localization and has a nice parameter table :) Breaking changes in 3.1.x - See https://github.com/Capgemini/Cauldron for more information.
Parse, generate or validate EDI documents.
Makes it easier to convert simple types.
Parse, generate or validate EDI documents.
The .NET Core C# ANTLR 4 runtime from the ANTLR Organization
This .NET standard library contains various parsers including Markdown and RSS. It is part of the Windows Community Toolkit.
A natural language date parser for .Net. A port of Ruby's chronic.
The C# target of the ANTLR 3 parser generator. This package supports projects targeting .NET 2.0 or newer, and built using Visual Studio 2010 or newer.
The library includes the debug support 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