Lib.rs

pest

The Elegant Parser

icu_plurals

Unicode Plural Rules categorizer for numeric input

pest_derive

pest's derive macro

typeql

Language for Rust

lalrpop-util

Runtime library for parsers generated by LALRPOP

lrtable

LR grammar table generation

llguidance

Super-fast Structured Outputs

lrpar

Yacc-compatible parser generator

cfg

manipulating context-free grammars

cfgrammar

Grammar manipulation

arborium-tree-sitter

Rust bindings to the Tree-sitter parsing library (vendored for arborium WASM support)

facet-macro-types

Unsynn grammar and type definitions for facet macro ecosystem

giallo

A code highlighter giving the same output as VSCode

in_definite

Get the indefinite article ('a' or 'an') to match the given word. For example: an umbrella, a user.

nimbleparse

Yacc grammar debugging tool

rust-sitter

A package for defining tree-sitter grammars alongside Rust logic

srgn

A grep-like tool which understands source code syntax and allows for manipulation in addition to search

pdl-compiler

Parser and serializer generator for protocol binary packets

charton

A high-performance, layered charting system for Rust, featuring a flexible data core and multi-backend rendering

cargo-spellcheck

Checks all doc comments for spelling mistakes

syntaqlite

Parser, formatter, validator, and language server for SQLite SQL — built on SQLite's own grammar

indefinite

Prefix a noun with an indefinite article - a or an - based on whether it begins with a vowel

sqry-lang-zig

Zig language plugin for sqry

ungrammar

A DSL for describing concrete syntax trees

from-pest

Convert from a pest grammar to a typed AST

cargo-build-automata

Command line interface to build static regular grammars

pest_grammars

pest popular grammar implementations

gbnf

working with GBNF

plotnik-compiler

Compiler for Plotnik query language (parser, analyzer, bytecode emitter)

parse_that

Zero-copy parser combinator library for Rust

wegglix

weggli is a fast and robust semantic search tool for C and C++ codebases. It is designed to help security researchers identify interesting functionality in large codebases.

pest_typed

A statically typed version of pest

bbnf-ir

Canonical Grammar IR for the BBNF compiler pipeline

dply

A command line data manipulation tool inspired by the dplyr grammar

shiftkit

building parsers and grammars

pest_consume

A framework for processing the output of a pest-generated parser

loess

Small proc macro grammar- and parser-generator providing great UX

arborium-highlight

Unified syntax highlighting for arborium - works with both static Rust grammars and WASM plugins

oxford_join

Join string slices with Oxford Commas!

pdl-runtime

PDL's runtime library

zalo

A code highlighter giving the same output as VSCode

panfix

parsing: linear time parsing of multifix operators

gorgeous

Grammar-driven pretty printers auto-generated from BBNF grammars

rust-sitter-tool

The external tool for Rust Sitter that extracts grammars from Rust definitions

theotui

A TUI to explore theoretical computer science topics

xgrammar-rs

Efficient, Flexible and Portable Structured Generation for Rust - Rust bindings for XGrammar

pred-recdec

Predicated Recursive Descent Parsing with BNF and impure hooks

harper-ls

The language checker for developers

static-automata

Derive macro for static regular grammar

bito

Quality gate tooling for building-in-the-open artifacts

tyr-grammar

Mathematical grammar for Tyr (rational numbers, sets)

littrs-ruff-python-parser

Vendored ruff_python_parser for littrs (from github.com/astral-sh/ruff)

type-sitter-cli

CLI for type-sitter (generate typed wrappers for tree-sitter grammars from node-types.json and queries)

trix-build

ergonomic code generation for aggregating tree-sitter languages

schoolmarm

GBNF grammar-constrained decoding for LLM inference, ported from llama.cpp

adl-lsp

Language Server Protocol implementation for ADL

gramatica

A compiler compiler for Rust implementing Earley's parser

sqry-tree-sitter-support

Tree-sitter integration helpers for sqry

teleparse

neotoma

A flexible, cached parser combinator framework for Rust

syn-grammar

A parser generator for Rust that compiles EBNF-like grammars into syn::parse::Parse implementations

bbnf-analysis

Pure analysis logic for BBNF grammars (shared by LSP + WASM)

adze-bdd-governance-reporting-core

Profile-aware reporting helpers for BDD governance status outputs

build-automata

Static regular grammar builder

gf-core

Rust runtime for Grammatical Framework

ggsql

A declarative visualization language that extends SQL with powerful data visualization capabilities

pidgin

non-recursive grammars

str-newtype

Derive macro to define safe wrappers around string types

pest_debugger

pest grammar debugger

pgf2json

Application Programming Interface to load and interpret grammars compiled in Portable Grammar Format (PGF). The PGF format is produced as a final output from the GF compiler. The library…

rowan-peg

Convert ABNF like grammar to rust-peg build rowan lossless syntax tree

trame-schema

X12 transaction set grammars and schema definitions

seshat-scanner

Tree-sitter parsing and file discovery for Seshat

ecfuzz

Evolutionary Coverage-guided Fuzzing engine

symbios-shape

A derivation engine for CGA Shape Grammars

harper-tree-sitter

The language checker for developers

rialo-syngen-dsl

Rialo Syngen DSL

bnf_rules

LR(1) parser generator

bunpo

Lightweight Japanese conjugation reversal (deinflection) system

ggsql-cli

Command-line interface for ggsql

prosaic-grammar-es

Spanish grammar layer for the Prosaic NLG engine

rustik-highlight

Rustik code highlighter

treetags

Generate vi compatible tags for multiple languages

deff

Interactive side-by-side git diff viewer for PR review

rma-parser

Tree-sitter based polyglot parser for Qryon

reqlang-expr

A tiny (bytecode compiled, stack VM interpreted) expression language for reqlang's templating engine

kiki

A minimalist parser generator for Rust

grammatica

representing and transforming formal grammars (Chomsky hierarchy today; extensible toward attribute, probabilistic, and specialized grammars)

legalis-dsl

Domain Specific Language for legal document parsing

gramma

Generate a scannerless parser by declaring types

gallop

General LL(1) Parser

prosaic-grammar-en

English grammar implementation for the prosaic crate

aufbau

Generalized prefix parsing for a class of context-dependent languages

gramex

common language for advance parsers

adze

Define tree-sitter grammars alongside Rust logic with AST-first parsing

hornbeam_grammar

Grammar for the Hornbeam template language

prosaic-grammar-de

German grammar layer for the Prosaic NLG engine

tree-house-bindings

Homey Rust bindings for the tree-sitter C library

calyx_rs

port of the Calyx generative grammar library

type-sitter-gen

generate typed wrappers for tree-sitter grammars from node-types.json and queries

adze-glr-core

GLR parser generation algorithms for pure-Rust Tree-sitter

rust-bison-skeleton

Bison skeleton for Rust

normalize-facts

Code fact extraction and storage library

wafrift-grammar

Grammar-aware payload mutation engine — SQL, XSS, CMD, LDAP, SSRF, path traversal, SSTI

gritpack-searchlib

Compiler-facing resolver and grammar integration surface for Gritpack

logical-expression-pest-parser

parses strings of logical expression using pest crate. It returns a truth table showing all input combinations with corresponding output results.

football_match_parser

parser for reading football match lines(date, time, teams, score, stadium, and status) and converting them into structured data

leekscript-core

LeekScript parser core: syntax, grammar, parser, preprocess, doc comments

spring_controller_parser

pest parser for Java Spring controllers

devup-editor-hotkey

Hotkey / keybinding matcher (mod+shift+l grammar + IME fallback) for devup-editor

lalrpop-intern

string interner used by LALRPOP

faputa

A stateful parser generator

peg

Parsing Expression Grammar (PEG) parser generator

narrative-engine

A reusable library for procedural text generation in games

tree-sitter-loader

Locates, builds, and loads tree-sitter grammars at runtime

pargen

A parser generator using ANTLR grammar syntax, outputting to Rust, Go, TypeScript, Python, Java, C, C++, and Tree-sitter

cfgc

A command-line tool for checking grammars from textual .cfg files

syntaqlite-cli

Fast, accurate SQLite SQL formatter, validator, and language server — built on SQLite's own grammar

static-self

A trait for values that can be cloned with a static lifetime

spindle-lib

efficient expression and byte sequence generator for fuzz testing

parsuna

recoverable, pull-based parsers with precise errors

la_dfa_2_dot

Create graphs from lookahead DFAs generated by parol

grammartec

The Nautilus grammartec

panproto-parse

Tree-sitter full-AST parsers and emitters for panproto language protocols

cfg-grammar

manipulating context-free grammars

container_image_dist_ref

parsing and validating container image references

pag-lexer

Parser-lexer fusion generator (derivative lexer)

cfg-symbol

manipulating context-free grammars

aglaea

Automatic Grammar Lifting with Assisted Entity Annotation

nlprule

A fast, low-resource Natural Language Processing and Error Correction library

highlight-spans

Tree-sitter ObjectScript highlight spans as attr/start/end tuples

tokensave-large-treesitters

All tree-sitter grammars for tokensave (47 languages)

adze-bdd-grid-core

Core BDD grid contracts for parser progress reporting and feature-aware status tracking

epistemology

clear way of hosting llama.cpp as a private HTTP API

leekscript-analysis

LeekScript semantic analysis: scope, validation, type checking

cfg-sequence

manipulating context-free grammars

tokensave-lite-treesitters

Essential tree-sitter grammars for tokensave (7 languages)

adze-parser-backend-core

Pure parser backend selection primitives

iota-parser

A PEG parser combinator library for Rust. Write parsers that look like grammars.

pest_tmp

The Elegant Parser

adze-bdd-scenario-core

Core BDD scenario status/types shared across governance and reporting crates

gazelle-macros

Procedural macros for the Gazelle parser generator

reovim-module-treesitter-typescript

TypeScript syntax highlighting module for reovim

adze-bdd-governance-core

Core BDD governance matrix primitives composed with parser feature policies

adze-feature-policy-core

Core parser feature-policy contracts shared by governance layers

syntaqlite-buildtools

Internal codegen and build tools for syntaqlite — not intended for direct use

hornbeam_ir

Intermediate representation for the Hornbeam template language

gram-lsp

Language Server Protocol implementation for Gram (.gram) files

cfg-generate

manipulating context-free grammars

syn-grammar-model

Shared model and parser for syn-grammar

peacock-fuzz

parse context-free grammars and create grammar-based fuzzing tools

reovim-module-treesitter-c

C syntax highlighting module for reovim

abnf_to_pest

A tiny crate that helps convert ABNF grammars to pest

parsuna-rt

Runtime for Rust parsers generated by the parsuna framework

bevy_toolbox

A collection of useful tools for Bevy game engine

varpulis-parser

Parser for VPL language

boron-lang

efficient, compiled programming language

weggli

fast and robust semantic search tool for C and C++ codebases. It is designed to help security researchers identify interesting functionality in large codebases.

text-to-sounds

parsing tool

pegy

A derive based parser generator

rowan-peg-utils

Utils for rowan-peg

tracery

Text-expansion library

reovim-module-treesitter-python

Python syntax highlighting module for reovim

normalize-languages

Tree-sitter language support and dynamic grammar loading

rins_markdown_parser

markdown parser written on Rust

graphy-parser

Tree-sitter parsing and dynamic grammar loading for graphy

html_simple_parser

parser for html files to extract tags, child tags, attributes, etc

catenary-ts

Safe FFI wrapper for loading tree-sitter grammars from shared libraries

oak

A typed parser generator syntax extension for Parsing Expression Grammar (PEG)

pag-compiler

Parser-lexer fusion generator (compiler interface)

reovim-module-treesitter-bash

Bash syntax highlighting module for reovim

sprout

growing simple, but beautiful AST trees 🌳

twitter_text_parser

Parser for twitter-text in Rust

grammar-kit

Runtime support library for parsers generated by syn-grammar

pag-parser

Parser-lexer fusion generator (parser generator)

layered-nlp

Highly-flexible data-oriented NLP framework

omg-idl-grammar

OMG IDL v4.0 grammar for pest

ielr

Table generation backend for LR parser generators

bnf_rules_parser

LR(1) parser generator

merc_pest_consume

A framework for processing the output of a pest-generated parser

cfg-classify

manipulating context-free grammars

dash-lang

interpreted language

cfg-history

manipulating context-free grammars

rusty-systems

procedurally generating content using L-Systems

adze-ir

Grammar Intermediate Representation for pure-Rust Tree-sitter

cargo-languagetool

A third-party cargo extension for checking grammar in the documentation and comments

branchy

tools for generating strings and sequences using context-free grammars

gnostr-grammar

tree-sitter grammars built from Helix with support for dynamic linking

gguppy

Compose once, chart anywhere with the pure Rust grammar of graphics crate gguppy

ini-parser

was developed as a part of the Rust course at National University of "Kyiv-Mohyla Academy"

repoask-treesitter

Tree-sitter multi-language parser for repoask

grammarbot-io

allows you to check your texts for grammar using the grammarbot service

cfg-symbol-bit-matrix

manipulating context-free grammars

tt-call

Token tree calling convention

cfg-predict-sets

manipulating context-free grammars

hyperion

Generic LSystem implementation

sipha-parse

Parsing engine for sipha - grammar rules, parser state, and parsing logic

gll

GLL parsing framework

url_parser

URL Parser is a Rust parser developed to parse URLs into structured components such as scheme, domain, path, query and fragment

gearley

An Earley parser engine

bulk_examples_generator

Create dozens/hundreds/thousands/millions of random examples based on a pest grammar (PEG). It can be used for generate string/structured data for training models in AI, or like a grammar fuzzer for find bugs.

tokensave-medium-treesitters

Common tree-sitter grammars for tokensave (18 languages)

theoinf

Parsers and interpreters for theoretical computer science topics

XML_to_JSON_Parser

Parser that converts simple XML language text to a string in JSON format written on Rust

reovim-module-treesitter-markdown

Markdown syntax highlighting module for reovim

uindex

Universal index

cfg-predict-distance

manipulating context-free grammars

reovim-driver-syntax-treesitter

Tree-sitter based syntax driver implementation for reovim

grammarly

allows you to check your texts for grammar using the grammarly service

earley-omnitool

An Earley parser engine

lllllxxxxx

TypeQL Grammar for Rust

tree-sitter-css-svelte

Extended CSS grammar for the Svelte toolchain

medical_parser

A parser for medical-data markup in an XML-like format

dicer

Dice Roller

racc

port of Berkeley YACC to Rust, and allows you to write grammar definitions directly in Rust source code

lalrpop-snap

convenient LR(1) parser generator

tree-sitter-swift-bundled

Thin wrapper: alex-pinkus/tree-sitter-swift grammar compiled against tree-sitter 0.22

rspg

LR(1) parser generator library

adze-parsetable-metadata

Shared .parsetable metadata model and parsing helpers

regen-lang

A language for defining languages

shopping_list_parser

Shopping-list parser for edu purposes

tl-scheme

TL language grammar

ru_shell

A Shell built around a semantic grammar

person_struct_parser

Rust parser for person struct

wee-peg

Parsing Expression Grammar (PEG) parser generator

topo-treesit

tree-sitter integration and grammar loading

glc

Generate a random expression based on a Context Free Grammar