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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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.
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.
request-promise
A Bluebird-powered Promise wrapper around the request HTTP client for Node.js — deprecated since 2020 along with request itself.
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
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.
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.
xml-formatter
Pretty-print and minify XML strings in JavaScript/TypeScript, respecting xml:space
http-cookie-agent
Adds tough-cookie-based cookie jar support to Node.js global fetch, undici, axios, node-fetch, and other HTTP clients.
sns-payload-validator
Verifies AWS SNS message signatures for HTTP/S and Lambda payloads.
esprima
A high-performance, standard-compliant ECMAScript parser producing ESTree-compatible ASTs for JavaScript tooling.
PdfParser
Standalone PHP library to extract text, metadata, and data from PDF files with no external tools.
lol-html
A low-latency streaming HTML parser and rewriter for Rust with a CSS-selector-based API.
