Open Source Packages

Libraries, frameworks, tools, and SDKs used by the apps in this directory — scored the same way as the apps themselves.

5929 packages

Kind2

postcss

A CSS transformation engine that parses styles into an AST, letting JS plugins lint, prefix, and rewrite CSS — the foundation beneath Autoprefixer, Tailwind, and 200+ other tools.

Marked

A fast, low-level Markdown compiler that parses CommonMark and GFM into HTML in Node.js, browsers, or the CLI.

testify

The essential Go toolkit for assertions, mocks, and structured test suites.

js-yaml

A fast, complete YAML 1.2 and 1.1 parser and serializer for JavaScript.

yaml

A definitive TypeScript parser and stringifier for YAML, supporting 1.1 and 1.2 with comment and CST access.

Commander.js

The complete, battle-tested framework for building Node.js command-line interfaces.

FastAPI

A modern, high-performance Python web framework for building APIs with automatic validation, serialization, and interactive docs.

Cobra

The commander library that powers Kubernetes, Hugo, and GitHub CLI's command-line interfaces.

jwt

A zero-dependency Go implementation of JSON Web Tokens (JWT) with pluggable HMAC, RSA, RSA-PSS, ECDSA, and Ed25519 signing methods.

url

A WHATWG-standard-compliant URL parser and manipulation library for Rust.

PapaParse

The fastest in-browser CSV parser for JavaScript, with streaming, Web Workers, and zero dependencies

Clap

The most widely used command-line argument parser for Rust, with both derive and builder APIs.

markdown-it

A fast, pluggable CommonMark-compliant Markdown parser and renderer for JavaScript, safe by default.

rich

A Python library for rendering rich text, tables, progress bars, and syntax-highlighted code in the terminal.

Cheerio

The fast, flexible library for parsing and manipulating HTML and XML with a familiar jQuery-style API.

yargs

The modern, pirate-themed command-line argument parser and command framework for Node.js

sanitize-html

Allowlist-based HTML sanitizer that strips XSS vectors from untrusted markup while preserving the tags and attributes you choose to keep.

websocket

A fast, RFC 6455-compliant WebSocket implementation for Go with full control over framing, compression, and concurrency.

Logrus

Structured, pluggable logging for Go with a stdlib-compatible API and level-based hooks.

body-parser

Node.js body-parsing middleware that turns raw HTTP request bodies into ready-to-use req.body objects.

mux

A lightweight, http.Handler-compatible Go router that matches requests by path, host, method, headers, and query, and can reverse them back into URLs.