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Parsing

A grammar describes the syntax of a programming language, and might be defined in Backus-Naur form (BNF). A lexer performs lexical analysis, turning text into tokens. A parser takes tokens and builds a data structure like an abstract syntax tree (AST). The parser is concerned with context: does the sequence of tokens fit the grammar? A compiler is a combined lexer and parser, built for a specific grammar.

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CyberChef

gchq /CyberChef

The Cyber Swiss Army Knife - a web app for encryption, encoding, compression and data analysis

hashing encoding compression encryption parsing data-analysis data-manipulation

UpdatedAug 6, 2025
JavaScript

pydantic

pydantic /pydantic

Data validation using Python type hints

python validation parsing json-schema hints pydantic python39 python310 python311 python312 python313

UpdatedDec 16, 2025
Python

tree-sitter /tree-sitter

An incremental parsing system for programming tools

c rust tree-sitter parser parsing incremental wasm

UpdatedDec 17, 2025
Rust

antlr /antlr4

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

javascript python java dart swift golang php parse csharp parsing cpp parser-generator grammar antlr antlr4 language-recognition

UpdatedDec 5, 2025
Java

llmware-ai /llmware

Unified framework for building enterprise RAG pipelines with small, specialized models

parsing agents onnx openvino llm llamacpp retrieval-augmented-generation generative-ai-tools small-specialized-models

UpdatedJul 24, 2025
Python

DoctorWkt /acwj

A Compiler Writing Journey

c parsing compiler lexical-analysis

UpdatedSep 24, 2025
C

valibot

open-circle /valibot

The modular and type safe schema library for validating structural data 🤖

modular typescript schema validation parsing runtime type-safe bundle-size

UpdatedDec 12, 2025
TypeScript

arktype

arktypeio /arktype

TypeScript's 1:1 validator, optimized from editor to runtime

javascript typescript parsing static-typing runtime-typechecking

UpdatedDec 15, 2025
TypeScript

jquery /esprima

ECMAScript parsing infrastructure for multipurpose analysis

javascript parser parsing ecmascript ast esprima

UpdatedApr 16, 2023
TypeScript

ohmjs /ohm

A library and language for building parsers, interpreters, compilers, etc.

javascript parser grammars typescript parsing compiler peg

UpdatedDec 10, 2025
JavaScript

estree /estree

The ESTree Spec

javascript parsing ast specification estree

UpdatedNov 25, 2025

marmelroy /PhoneNumberKit

A Swift framework for parsing, formatting and validating international phone numbers. Inspired by Google's libphonenumber.

swift validation parsing phone-number google-libphonenumber formatting contacts

UpdatedDec 15, 2025
Swift

pest-parser /pest

The Elegant Parser

rust parsing peg

UpdatedNov 21, 2025
Rust

lief-project /LIEF

LIEF - Library to Instrument Executable Formats (C++, Python, Rust)

art android python rust parser sdk parsing reverse-engineering elf malware-analysis binary-analysis macho pe oat modification dex executable-formats lief vdex

UpdatedNov 12, 2025
C++

Leonidas-from-XIV /node-xml2js

XML to JavaScript object converter.

nodejs javascript coffeescript node parsing xml xml2json xml-parser node-js xml2js

UpdatedJul 30, 2023
CoffeeScript

google /wuffs

Wrangling Untrusted File Formats Safely

programming-language parsing memory-safety codec

UpdatedNov 24, 2025
C

zesterer /chumsky

Write expressive, high-performance parsers with ease.

parser errors parsing parser-combinators lexing peg context-free-grammar recursive-descent-parser

UpdatedDec 15, 2025
Rust

run-llama /llama_cloud_services

Knowledge Agents and Management in the Cloud

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UpdatedDec 12, 2025
TypeScript

troessner /reek

Code smell detector for Ruby

ruby quality parsing static-analysis linters smell smell-warnings smell-detector

UpdatedDec 8, 2025
Ruby

zserge /jsmn

Jsmn is a world fastest JSON parser/tokenizer. This is the official repo replacing the old one at Bitbucket

parsing json-data json-string

UpdatedJun 9, 2024
C

Followers: 11k followers
Website: github.com/topics/parsing
Wikipedia: Wikipedia

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