Write expressive, high-performance parsers with ease.

LR(1) parser generator for Rust

write snippet code to rewrite your project code

Rust parser combinator framework

A parser combinator library for Zig

PEG parser combinators using operator overloading without macros.

Peggy: Parser generator for JavaScript

Flat Abstract Syntax Tree

Create ridiculously fast Lexers

Just a CSS selector parser.

💥 Fast State-of-the-Art Tokenizers optimized for Research and Production

tiktoken is a fast BPE tokeniser for use with OpenAI's models.

A general-purpose HCL2 (Hashicorp Configuration Language) parser written in Crystal.

Testing of various jxl implementations in terms of conformance, speed, compression, ...

Elegant parsing expression grammars

Lex is an implementation of lex tool in Ruby.

A stream abstraction designed for use with nom

A terminal application to view, tail, merge, and search log files (plus JSONL).

An extremely fast Python linter and code formatter, written in Rust.

A JavaScript parser written in Rust

The ESTree Spec

A small PEG based parser library. See the Hacking page in the Wiki as well.

jq implementation of jq

jq for binary formats - tool, language and decoders for working with binary and text formats

Command-line JSON processor

EBNF parser and generic parser generator for Ruby.

Lil Scan helps you hand-write parsers in Zig

LALR(1) parser generator for Rust based on Lemon + SQL parser

Syntax highlighter powered by tree-sitter and Neovim themes.

A character encoding detector for legacy Web content.