domain: parsers
443 products, primary matches first, then adoption-weighted; health v2 shown.
| Product | Health v2 | Stars | Maturity |
|---|---|---|---|
| DeusData/codebase-memory-mcp A Model Context Protocol (MCP) server that indexes codebases into a persistent knowledge graph of functions, classes, call chains, and HTTP… | 81 | 40771 | active |
| cheeriojs/cheerio Cheerio is a fast, flexible JavaScript library for parsing and manipulating HTML and XML with a jQuery-like API. It works in both browser a… | 84 | 30468 | stable |
| tree-sitter/tree-sitter Tree-sitter is a parser generator tool and incremental parsing library that builds concrete syntax trees for source files and efficiently u… | 99 | 26764 | stable |
| Wilfred/difftastic Difftastic is a structural diff CLI tool that compares files based on syntax parsed with tree-sitter, rather than line-by-line. It supports… | 94 | 25822 | active |
| simdjson/simdjson A C++ library that parses JSON at gigabytes-per-second speeds using SIMD instructions and microparallel algorithms, with runtime CPU-tailor… | 99 | 24196 | stable |
| markdown-it/markdown-it markdown-it is a fast, pluggable Markdown parser for JavaScript with 100% CommonMark support plus syntax extensions like URL autolinking an… | 77 | 21849 | stable |
| dotnet/roslyn Roslyn is the open-source .NET Compiler Platform implementing the C# and Visual Basic compilers with rich code analysis APIs. It exposes co… | 67 | 20628 | stable |
| ANTLR v4 ANTLR v4 is a parser generator that reads grammar files and produces parsers, lexers, and parse-tree walkers in ten target languages includ… | 53 | 18986 | stable |
| nikic/PHP-Parser A PHP parser written in PHP that converts PHP 5.x through 8.4 code into an abstract syntax tree (AST). It provides AST traversal, modificat… | 96 | 17456 | stable |
| clap-rs/clap clap is a full-featured, fast command line argument parser library for Rust. It supports declarative (derive-based) and procedural parser c… | 98 | 16664 | stable |
| ast-grep/ast-grep ast-grep is a fast Rust-based CLI tool for structural search, linting, and rewriting of code using AST patterns instead of plain text match… | 95 | 15652 | active |
| tidwall/gjson GJSON is a Go library for quickly extracting values from JSON documents using dot-notation paths, with support for wildcards, iteration, an… | 69 | 15554 | stable |
| erusev/parsedown Parsedown is a fast, single-file Markdown parser for PHP with GitHub Flavored Markdown support and no dependencies. It includes a safe mode… | 64 | 15058 | stable |
| nvim-treesitter/nvim-treesitter A Neovim plugin that manages installation and updating of tree-sitter parsers and provides a collection of queries enabling tree-sitter fea… | 77 | 14334 | active |
| DaveGamble/cJSON cJSON is an ultralightweight JSON parser and serializer written in ANSI C, distributed as a single C file and header. It provides simple pa… | 59 | 12953 | stable |
| acornjs/acorn Acorn is a small, fast JavaScript parser written entirely in JavaScript that produces an ECMAScript syntax tree (AST). It ships as three pa… | 75 | 11440 | stable |
| jhy/jsoup jsoup is a Java library for parsing, manipulating, and cleaning real-world HTML and XML, implementing the WHATWG HTML5 specification to pro… | 95 | 11387 | stable |
| doctrine/lexer A PHP base library providing an abstract lexer for building Top-Down, Recursive Descent Parsers. It tokenizes input strings and is used int… | 62 | 11146 | stable |
| wader/fq fq is a command-line tool, expression language, and set of decoders for inspecting and querying binary formats, modeled after jq and using … | 91 | 10581 | active |
| rust-bakery/nom nom is a parser combinator library for Rust that lets you build safe, fast, zero-copy parsers for binary and text formats using combinators… | 49 | 10459 | stable |
| google/re2 RE2 is a C++ regular expression library that guarantees linear-time matching, making it safe for handling regexes from untrusted users. It … | 68 | 9785 | stable |
| tobymao/sqlglot SQLGlot is a dependency-free Python SQL parser, transpiler, optimizer, and execution engine supporting 30+ SQL dialects such as DuckDB, Sno… | 77 | 9569 | stable |
| phpDocumentor/ReflectionDocBlock A PHP library from the phpDocumentor project that parses DocBlocks (doc comments) into structured objects, fully compatible with the PHPDoc… | 91 | 9361 | stable |
| phpDocumentor/ReflectionCommon ReflectionCommon is a small PHP library containing shared interfaces and common classes used by phpDocumentor's reflection components. It s… | 46 | 9036 | stable |
| mvdan/sh A Go library and CLI tool (shfmt) that parses, formats, and interprets shell scripts supporting POSIX Shell, Bash, Zsh, and mksh. It expose… | 83 | 9009 | active |
| kellyjonbrazil/jc A CLI tool and Python library that converts the output of popular command-line tools, file types, and common strings into JSON, YAML, or Py… | 87 | 8667 | active |
| robertkrimen/otto Otto is a JavaScript parser and interpreter written natively in Go, providing an embeddable VM for running JavaScript inside Go application… | 46 | 8452 | active |
| pemistahl/grex grex is a command-line tool and Rust library (with Python bindings) that automatically generates regular expressions from user-provided tes… | 59 | 8173 | active |
| golang/tools The golang.org/x/tools module provides packages and commands for static analysis of Go programs, including SSA IR, call graphs, and a modul… | 93 | 7995 | active |
| boa-dev/boa Boa is an embeddable JavaScript engine (lexer, parser, and interpreter) written in Rust with support for over 90% of the latest ECMAScript … | 83 | 7501 | active |
| symfony/css-selector A Symfony PHP component that converts CSS selectors into XPath expressions. It lets developers query HTML or XML documents using familiar C… | 99 | 7421 | stable |
| dop251/goja Goja is an ECMAScript 5.1 (plus partial ES6) JavaScript engine implemented entirely in pure Go, emphasizing standard compliance and perform… | 77 | 7059 | active |
| RockstarLang/rockstar Rockstar is an esoteric programming language whose syntax is inspired by 1980s hard rock and heavy metal lyrics, together with its official… | 74 | 6883 | active |
| nodeca/js-yaml js-yaml is a fast YAML 1.2 (and 1.1) parser and serializer for JavaScript, passing the full YAML test suite. It converts YAML text into Jav… | 77 | 6626 | stable |
| doxygen/doxygen Doxygen is the de facto standard open-source tool for generating documentation from annotated source code, with primary support for C++ and… | 94 | 6563 | stable |
| fkling/astexplorer A web-based tool for exploring the abstract syntax trees (ASTs) generated by dozens of parsers for JavaScript, CSS, HTML, GraphQL, YAML, an… | 23 | 6542 | active |
| ondrajz/go-callvis go-callvis is a development tool that visualizes the call graph of Go programs using pointer analysis and Graphviz dot output. It provides … | 56 | 6508 | active |
| sparklemotion/nokogiri Nokogiri is a Ruby library for parsing, querying, modifying, and generating XML and HTML documents, built on native parsers like libxml2, l… | 96 | 6277 | stable |
| dsherret/ts-morph ts-morph is a TypeScript library that wraps the TypeScript Compiler API to simplify programmatic navigation and manipulation of TypeScript … | 88 | 6164 | active |
| javaparser/javaparser JavaParser is a Java library that parses Java source code (Java 1.0 through Java 25) into an Abstract Syntax Tree with advanced analysis ca… | 86 | 6141 | active |
| lark-parser/lark Lark is a parsing toolkit for Python that can parse all context-free grammars using Earley, LALR(1), and CYK algorithms. It automatically b… | 79 | 5968 | stable |
| JSQLParser/JSqlParser JSqlParser is a Java library that parses SQL statements into a traversable hierarchy of Java classes (an AST) that can be navigated via the… | 74 | 5956 | active |
| leethomason/tinyxml2 TinyXML-2 is a small, efficient C++ XML parser that builds a DOM from XML documents which can be read, modified, and saved. It consists of … | 71 | 5792 | stable |
| martinblech/xmltodict xmltodict is a Python library that converts XML documents into Python dictionaries and back, making XML manipulation feel like working with… | 89 | 5751 | stable |
| buger/jsonparser A fast, zero-allocation JSON parser for Go that lets you extract fields by path without defining structs or schemas. It is significantly fa… | 97 | 5648 | active |
| lief-project/LIEF LIEF is a cross-platform C++ library (with Python and Rust bindings) for parsing, inspecting, modifying, and writing executable file format… | 97 | 5549 | stable |
| ohmjs/ohm Ohm is a parsing toolkit consisting of a JavaScript library and a domain-specific language based on parsing expression grammars (PEGs). It … | 80 | 5543 | active |
| nanopb/nanopb Nanopb is a small code-size Protocol Buffers implementation in plain ANSI C, designed for microcontrollers and other memory-constrained sys… | 88 | 5537 | stable |
| AngleSharp/AngleSharp AngleSharp is a .NET library that parses HTML5, SVG, MathML, XML, and CSS into a fully standards-compliant W3C DOM. It supports querySelect… | 99 | 5531 | active |
| pest-parser/pest pest is a general-purpose parser library for Rust based on parsing expression grammars (PEG). Grammars are defined in separate .pest files,… | 94 | 5384 | stable |
| xoofx/markdig Markdig is a fast, CommonMark-compliant, extensible Markdown processor for .NET that converts Markdown to HTML. It provides a rich AST with… | 95 | 5307 | stable |
| rust-lang/rust-bindgen bindgen is a Rust tool that automatically generates Rust FFI bindings to C (and some C++) libraries by parsing header files with libclang. … | 76 | 5270 | active |
| benjamn/recast Recast is a JavaScript syntax tree (AST) transformer and nondestructive pretty-printer that preserves original formatting where possible. I… | 67 | 5255 | stable |
| supabase-community/postgres-language-server A Language Server Protocol implementation and toolchain for Postgres SQL, built on libpg_query for 100% syntax compatibility. It provides e… | 95 | 5250 | active |
| theseer/tokenizer A small PHP library that tokenizes PHP source code and serializes the resulting tokens into XML (and potentially other formats). It is comm… | 70 | 5195 | stable |
| scinfu/SwiftSoup SwiftSoup is a pure Swift HTML parser library that conforms to the WHATWG HTML5 specification and offers DOM traversal, CSS selectors, and … | 99 | 5119 | stable |
| mangiucugna/json_repair A Python library that repairs malformed JSON strings, such as broken output from LLMs, APIs, logs, or user input. It works as a drop-in fal… | 91 | 5079 | active |
| Leonidas-from-XIV/node-xml2js A Node.js library that converts XML into JavaScript objects and back, built on sax-js and xmlbuilder-js. It supports simple callback and pr… | 68 | 4965 | stable |
| yuin/goldmark goldmark is a Markdown parser written in pure Go that is fully compliant with the CommonMark 0.31.2 specification. It features an extensibl… | 98 | 4964 | stable |
| trailhq/Graft Graft is an open-source context layer for large codebases that builds a deterministic code graph using tree-sitter AST parsing and exposes … | 58 | 4948 | active |
| inkle/ink ink is inkle's open-source scripting language and narrative engine for writing interactive, branching stories in games. Written in C#, it i… | 74 | 4914 | stable |
| vitali87/code-graph-rag Code-Graph-RAG is a Python CLI tool and MCP server that parses multi-language codebases with Tree-sitter, builds a knowledge graph of code … | 85 | 4828 | active |
| google/wuffs Wuffs is a memory-safe programming language plus a standard library for safely parsing, decoding and encoding untrusted file formats such a… | 75 | 4820 | active |
| fb55/htmlparser2 htmlparser2 is a fast, forgiving HTML and XML parser for JavaScript and TypeScript, offering a low-allocation callback interface as well as… | 87 | 4788 | stable |
| include-what-you-use/include-what-you-use Include What You Use (IWYU) is a Clang-based tool that analyzes #include directives in C and C++ source files. It detects superfluous inclu… | 82 | 4757 | active |
| yoav-lavi/melody Melody is a domain-specific language that compiles to ECMAScript regular expressions, designed to be more readable and maintainable than ra… | 23 | 4743 | active |
| kaitai-io/kaitai_struct Kaitai Struct is a declarative language for describing binary data structures (file formats, network packet layouts) in .ksy files. A compi… | 76 | 4664 | active |
| zeux/pugixml pugixml is a light-weight C++ XML processing library providing a DOM-like interface, an extremely fast non-validating XML parser, and an XP… | 79 | 4624 | stable |
| scottrogowski/code2flow Code2flow is a command-line tool that generates approximate call graphs for dynamic languages (Python, JavaScript, Ruby, PHP) by parsing so… | 47 | 4604 | active |
| biomejs/gritql GritQL is a declarative query language and Rust-based CLI for searching, linting, and rewriting source code using pattern matching over AST… | 80 | 4582 | active |
| zesterer/chumsky Chumsky is a Rust parser-combinator library for writing expressive, high-performance parsers with rich error diagnostics and recovery. It s… | 10 | 4540 | active |
| CodeGraphContext/CodeGraphContext CodeGraphContext (CGC) is an MCP server and CLI tool that indexes local codebases into a graph database, exposing code structure and relati… | 84 | 4126 | active |
| westes/flex flex is the classic fast lexical analyzer generator that produces C/C++ scanner code from regular-expression pattern specifications. It is … | 66 | 4039 | stable |
| symfony/dom-crawler Symfony DomCrawler is a PHP component that eases DOM navigation for HTML and XML documents. It provides a Crawler class for querying and tr… | 99 | 4027 | stable |
| andialbrecht/sqlparse sqlparse is a non-validating SQL parser library for Python that tokenizes SQL text, splits scripts into statements, formats them, and expos… | 76 | 4014 | stable |
| rust-lang/regex The standard regular expression crate for Rust, built on finite automata (DFAs/NFAs) to guarantee worst-case linear-time matching. It suppo… | 66 | 4012 | stable |
| inikulin/parse5 parse5 is a fast, WHATWG HTML Living Standard-compliant HTML parsing and serialization toolset for Node.js, written in TypeScript. It parse… | 84 | 3925 | stable |
| alecthomas/participle Participle is a parser and lexer library for Go that lets you define grammars declaratively using annotated Go struct tags, similar in styl… | 79 | 3878 | stable |
| ibireme/yyjson yyjson is a high-performance JSON parsing and serialization library written in ANSI C (C89), capable of reading and writing gigabytes of JS… | 75 | 3849 | stable |
| hanickadot/compile-time-regular-expressions A C++17/C++20 header-only library that evaluates regular expressions at compile time using constexpr and template metaprogramming. It suppo… | 79 | 3839 | stable |
| kach/nearley nearley is a JavaScript parser toolkit built on the Earley parsing algorithm, consisting of a BNF-based grammar DSL compiler and a lightwei… | 23 | 3742 | stable |
| mozilla/source-map A JavaScript library for generating and consuming source maps, the standard format mapping generated code back to original sources. It prov… | 76 | 3724 | stable |
| swiftlang/swift-syntax A set of Swift libraries for parsing, inspecting, generating, and transforming Swift source code via a source-accurate syntax tree (SwiftSy… | 91 | 3693 | stable |
| dotnet/command-line-api System.CommandLine is a .NET library for command line parsing, model binding, invocation, and rendering of terminal output, plus the dotnet… | 83 | 3674 | active |
| quickjs-ng/quickjs QuickJS-NG is a small, embeddable JavaScript engine written in C that aims to support the latest ECMAScript specification. It is an activel… | 89 | 3656 | active |
| Tencent/rapidjson RapidJSON is a fast, header-only C++ library for parsing and generating JSON, offering both SAX and DOM style APIs. It is self-contained wi… | 25 | 15121 | maintenance |
| eliben/pycparser pycparser is a complete C99 parser written in pure Python with no external dependencies. It produces an AST that can be used for static ana… | 79 | 3563 | stable |
| maciejhirsz/logos Logos is a Rust lexer generator library that derives fast tokenizers from enum definitions using token and regex attributes. It combines al… | 81 | 3550 | stable |
| firasdib/Regex101 Regex101 is a popular web application for building, testing, and debugging regular expressions with support for multiple regex flavors. Thi… | 66 | 3511 | active |
| lalrpop/lalrpop LALRPOP is an LR(1) parser generator for Rust focused on usability, letting you write compact, DRY, readable grammars with macros, type inf… | 75 | 3504 | stable |
| gluon-lang/gluon Gluon is a small, statically-typed functional programming language with type inference, implemented in Rust and designed for embedding in a… | 97 | 3435 | active |
| apache/datafusion-sqlparser-rs An extensible SQL lexer and parser library for Rust that produces an AST conforming to the ANSI/ISO SQL standard and various vendor dialect… | 77 | 3432 | active |
| dtolnay/syn Syn is a Rust parsing library that converts a stream of Rust tokens into a syntax tree of Rust source code. It is primarily designed for us… | 99 | 3415 | stable |
| carthage-software/mago Mago is an extremely fast PHP toolchain written in Rust that provides linting, formatting, static analysis, and automated fixes through a u… | 85 | 3409 | active |
| mono/CppSharp CppSharp is a tool and library set that parses C/C++ headers and libraries and generates glue code to expose native APIs as managed .NET AP… | 66 | 3404 | active |
| swiftlang/swift-markdown A Swift package for parsing, building, editing, and analyzing Markdown documents, backed by GitHub-flavored Markdown's cmark-gfm implementa… | 89 | 3403 | stable |
| Ataraxy-Labs/sem sem is a semantic version control CLI built on top of Git that parses code with tree-sitter and diffs, blames, and analyzes impact at the e… | 82 | 3315 | active |
| json-c/json-c json-c is a C library implementing a reference-counted object model for constructing, serializing, and parsing JSON, aiming to conform to R… | 84 | 3287 | stable |
| alecthomas/kong Kong is a command-line argument parser library for Go that maps flags, positional arguments, and subcommands onto Go structs using tags. It… | 77 | 3162 | stable |
| NaturalIntelligence/fast-xml-parser A pure JavaScript library for rapidly validating XML, parsing XML to JS objects, and building XML from JS objects, with no C/C++ dependenci… | 98 | 3135 | stable |
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