Open-source alternatives to Clache

Simple parser combinators for Common Lisp.

LibYAML binding for Lua.

JSON parser/encoder for Lua Parses JSON using LPEG for speed and flexibility. Depending on parser/encoder options, various values are preserved as best as possible.

A library to easily read and write complex binary formats.

Common Lisp Yacc

Lua library for conversion between markup formats

Encode and decode deeply-nested data into flat Swift objects

Lua CJSON is a fast JSON encoding/parsing module for Lua

Parseq is a library for Common Lisp used for parsing sequences such as strings and lists using parsing expression grammars.

Lua Protocol Buffers

SAX-like streaming XML parser for Lua

A port of LPeg 100% written in Lua.

A Lexical Analyzer Generator

An experimental implementation of parsing expression grammars (a la Janet) in Common Lisp

Simple lexical analyzer for shell-like syntaxes

A lightweight JSON library for Lua

LPeg version 1.0 Parser in pure LuaJIT

Common Lisp packrat parser

An extension of LPeg that supports labeled failures

Lexing & Syntax Highlighting in Lua (using LPeg)