Top 20 NuGet parsing Packages

A lightweight, fast, and flexible parsing library for C#, developed at Stack Overflow.
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.
A .net wrapper for the ua-parser library
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.
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 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 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.
Contains general interfaces and classes for working with FHIR data, regardless of FHIR version or POCO's
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
Parse, generate or validate EDI documents.
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.
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. Script Syntax: https://waher.se/Script.md
Contains script extensions for graphs.
Provides command-line parsing API integration with the generic host API (Microsoft.Extensions.Hosting).
Parse, generate or validate EDI documents.
Improved xNet library for .NET Framework 4.5.2, 4.6.2, 4.7.1, 4.7.2 & .NET Core 2.0-2.2
Irony Parser Kit, interpreter library
Command Line Parsing and Execution