sirthias/parboiled2

simple combinator-based parsing for Scala. formerly part of the Scala standard library, now a separate community-maintained module

PEG parser combinators using operator overloading without macros.

The Elegant Parser

Python library for creating PEG parsers

Library to read, analyze, transform and generate Scala programs

ANTLR (ANother Tool for Language Recognition) is a powerful parser generator for reading, processing, executing, or translating structured text or binary files.

Command pigeon generates parsers in Go from a PEG grammar.

Fast and lightweight parser creation tools

Peggy: Parser generator for JavaScript