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.
Tiptap Core
Headless, framework-agnostic rich text editor toolkit built on ProseMirror
NumPy
The fundamental N-dimensional array library powering Python's scientific computing stack.
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
PyYAML
A full-featured YAML parser and emitter for Python, with C-accelerated bindings
cors
Node.js CORS middleware for Express and Connect that sets standards-compliant headers to control cross-origin browser access.
FastAPI
A modern, high-performance Python web framework for building APIs with automatic validation, serialization, and interactive docs.
React Flow
A highly customizable React library for building node-based editors, diagrams, and interactive flow charts.
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
reqwest
An ergonomic, batteries-included HTTP client for Rust, with async and blocking APIs.
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
tempfile
A secure, cross-platform Rust library for temporary files and directories that clean up automatically on drop.
JSZip
Create, read, and edit ZIP files directly in JavaScript, in the browser or Node.js.
base64
Correct, fast, and configurable base64 encoding and decoding for Rust, with pluggable alphabets and padding.
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.
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.
