Open Source Packages
Libraries, frameworks, tools, and SDKs used by the apps in this directory — scored the same way as the apps themselves.
All Packages
Category
Sort:Used by Most Apps
TanStack Virtual (React)
Headless React hook for virtualizing massive lists, grids, and tables at 60FPS.
Uvicorn
A lightning-fast ASGI server for Python, built on uvloop and httptools.
tslib
The runtime library that houses TypeScript's compiler helper functions so your emitted code stays small.
Mermaid
Generate flowcharts, sequence diagrams, and 20+ other diagram types from markdown-like text
NumPy
The fundamental N-dimensional array library powering Python's scientific computing stack.
cors
Node.js CORS middleware for Express and Connect that sets standards-compliant headers to control cross-origin browser access.
PyYAML
A full-featured YAML parser and emitter for Python, with C-accelerated bindings
Fontsource Inter
Self-host the Inter typeface with a single npm install and zero third-party font requests.
React Flow
A highly customizable React library for building node-based editors, diagrams, and interactive flow charts.
FastAPI
A modern, high-performance Python web framework for building APIs with automatic validation, serialization, and interactive docs.
Chart.js
Simple, flexible JavaScript charting for designers and developers
highlight.js
Zero-dependency JavaScript syntax highlighter with automatic language detection for over 190 languages.
python-dotenv
Load environment variables from a .env file into Python's os.environ, the standard way to keep 12-factor config out of your code
Oxlint
Rust-based JavaScript/TypeScript linter that runs 50-100x faster than ESLint, with zero configuration required.
diff
A battle-tested JavaScript library for computing and applying text diffs at the character, word, line, sentence, CSS, or JSON level.
Electron
Build cross-platform desktop apps with JavaScript, HTML, and CSS on Chromium and Node.js
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
Fuse.js
Lightweight, zero-dependency fuzzy-search library for JavaScript and TypeScript, in the browser or on the server.
KaTeX
Fast, self-contained JavaScript library for print-quality LaTeX math rendering on the web.
JSZip
Create, read, and edit ZIP files directly in JavaScript, in the browser or Node.js.
css-loader
Resolves CSS @import and url() like JavaScript imports so webpack can bundle stylesheets and their assets.
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
