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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Oxlint
Rust-based JavaScript/TypeScript linter that runs 50-100x faster than ESLint, with zero configuration required.
Floating UI
React hooks and components for building accessible, perfectly positioned tooltips, popovers, and dropdowns.
MDX
The compiler that lets you write JSX directly inside Markdown documents
classnames
A tiny utility for conditionally joining CSS class names together.
Emotion
Performant, flexible CSS-in-JS styling for React with the css prop, theming, and SSR support
eslint-plugin-jsx-a11y
Static ESLint rules that catch JSX accessibility issues before code ships.
React Icons
SVG icon components for React, bundling 40+ popular icon packs behind one consistent import syntax.
Pillow
The friendly PIL fork that adds image processing capabilities to Python
url
A WHATWG-standard-compliant URL parser and manipulation library for Rust.
pandas
The Python DataFrame library for fast, flexible, and expressive data analysis and manipulation.
PapaParse
The fastest in-browser CSV parser for JavaScript, with streaming, Web Workers, and zero dependencies
boto3
The official AWS SDK for Python — call every Amazon Web Services API from your code.
OpenAI Python SDK
The official Python library for the OpenAI REST API, generated from OpenAI's OpenAPI spec with typed sync and async clients.
React Syntax Highlighter
A React component for syntax-highlighting code blocks using highlight.js or Prism ASTs, with JavaScript-based styles and no external stylesheet required.
TanStack Router
A fully type-safe React router with built-in data loading, caching, and URL search-param validation.
SWC
Rust-based JavaScript/TypeScript compiler, a drop-in super-fast alternative to Babel
Clap
The most widely used command-line argument parser for Rust, with both derive and builder APIs.
react-dropzone
A lightweight React hook for building HTML5-compliant drag-and-drop file upload zones.
prism-react-renderer
A lightweight, themeable Prism syntax highlighter for React and React Native, built on a render-props API.
cryptography
The standard cryptographic library for Python, pairing safe high-level recipes with low-level primitives backed by Rust and OpenSSL.
React CodeMirror
A fully-typed React component and hook for embedding the CodeMirror 6 code editor with themes and language extensions.
markdown-it
A fast, pluggable CommonMark-compliant Markdown parser and renderer for JavaScript, safe by default.
React Email
High-quality, unstyled React components for building responsive HTML emails
Embla Carousel React
A lightweight, dependency-free React hook for building fluid, touch-precise carousels and sliders.