Write expressive, high-performance parsers with ease.

DFA regular expression library & friends

A minimalist single-header library for building pattern-matchers, lexers, and parsers.

Nice parsers in OCaml without the boilerplate

Tokenization for Julia source code

Lex is an implementation of lex tool in Ruby.

Platform for parser generators and other grammarware research and development. GLL, RNGLR, graph parsing algorithms, and many others are included.

Basic Parser in Emacs Lisp.

.NET Standard library for parsing and generating Graphviz DOT files.

Lexical analyzer for Javascript developers

A simple stack-based Virtual Machine in C#

😈 Automates devilries to make you even more happy together with Ragel and Go

FastPy is a statically typed programming language with pythonic syntax.

interactive parsing in GoKi / GoGi framework -- makes parsing fun again!

🌳 Python lexer that can remember tokens and state and only reparse changed parts of a text document

Fast, RFC-4180 compliant, CSV lexing.

A simple tokenizer I made for JS while making a project that required tokens.

🍪 Lexer step + parser combinators + great error messages [nibble fork]

A lexer-generator/parser-combinator for any context-free format