Open Source Packages
Libraries, frameworks, tools, and SDKs used by the apps in this directory — scored the same way as the apps themselves.
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url-parse
Small, dependency-light URL parser that works identically in Node.js and the browser.
MyST Parser
An extended CommonMark-compliant Markdown parser with first-class bridges to docutils and Sphinx.
Griffe
Extract signatures and structure from entire Python programs for API docs and breaking-change detection.
url-pattern
A tiny, dependency-free library for matching and generating URL-like string patterns without regex.
go-shellwords
A Go library that splits shell-style command-line strings into argument slices, honoring POSIX quoting, escaping, and substitution rules.
roxmltree
Parse XML into a fast, read-only tree in Rust with zero unsafe code and no dependencies.
tree-sitter-c
The official C grammar for the tree-sitter incremental parsing library
@iarna/toml
A fast, spec-compliant TOML parser and stringifier for Node.js with a familiar JSON-style interface.
tree-sitter-php
Incremental PHP grammar for the tree-sitter parsing library
tree-sitter-ruby
The official Ruby grammar for the tree-sitter incremental parsing library
tree-sitter-json
Fast, incremental JSON grammar for the Tree-sitter parsing framework.
accept-language-parser
Parse HTTP Accept-Language headers and pick the best matching locale
parse-diff
A fast, dependency-free unified diff parser that converts raw patch text into structured file, chunk, and line-change objects for JavaScript and TypeScript projects.
Parsedown
Fast, single-class Markdown parser for PHP with no dependencies beyond mbstring.
Participle
A dead-simple Go library for building parsers straight from annotated struct tags.
ojg
A high-performance JSON parser and toolkit for Go with a full JSONPath implementation.
libopenapi
A high-performance Go library for parsing, validating, mutating, bundling, and diffing OpenAPI 3.2/3.1/3.0, Swagger, Overlay, and Arazzo documents.
httparse
A tiny, safe, zero-copy push parser for the HTTP/1.x protocol in Rust
tree-sitter-md
Fast, incremental Markdown grammar for the Tree-sitter parsing framework.
astroid
A Python AST library with static type and value inference, powering pylint
argparse
A faithful JS port of Python's argparse — sub-commands, auto-generated help, and typed CLI arguments for Node.js.
react-papaparse
React hooks and components wrapping PapaParse for fast in-browser CSV parsing
comment-json
Parse and stringify JSON with comments, preserving them exactly through modification and re-save.
postcss-value-parser
Transforms CSS declaration values and at-rule params into a traversable node tree.
