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

Kind

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.

typescript-eslint

The official meta-package bundling the TypeScript ESLint parser, plugin, and rule presets behind a single typed config() helper.

date-fns

Modern JavaScript date utility library with 200+ pure, immutable functions

Axios

Promise-based HTTP client for the browser and Node.js with interceptors, automatic transforms, and cancellation

Zustand

A small, fast React state management library with a hook-based API and no boilerplate.

eslint-plugin-import

ESLint rules that validate ES module import/export syntax and catch broken paths before they hit your build.

Marked

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

Sentry JavaScript (@sentry/browser)

The official Sentry SDK for capturing errors, performance traces, and session replays in browser JavaScript apps.

Sass

The reference Dart implementation of Sass, the mature CSS preprocessor that compiles SCSS and indented syntax to standards-compliant CSS.

js-yaml

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

pytest

The Python testing framework that makes writing small tests easy and scales to complex functional test suites.

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.

@hookform/resolvers

Official React Hook Form adapters that plug 20+ schema-validation libraries — Zod, Yup, Joi, Valibot, ArkType and more — straight into useForm's resolver.