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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serde
A generic framework for serializing and deserializing Rust data structures efficiently and safely.
dnd-kit
A lightweight, extensible React library for building accessible drag-and-drop interfaces.
AI SDK
Provider-agnostic TypeScript toolkit for building AI apps and agents with any LLM.
Pydantic
Data validation and settings management using Python type hints, backed by a Rust core.
pytest
The Python testing framework that makes writing small tests easy and scales to complex functional test suites.
react-i18next
React bindings for the i18next internationalization ecosystem, built on hooks and a translation-aware Trans component.
next-themes
Perfect dark mode for React and Next.js apps in two lines of code, with zero flash on load.
Tokio
The async runtime powering most of Rust's networked, concurrent, and I/O-bound applications.
react-day-picker
A lightweight, fully customizable date picker component for React applications.
Storybook
The industry-standard workshop for building, documenting, and testing UI components in isolation, across every major frontend framework.
HTTPX
A next-generation HTTP client for Python with sync, async, and HTTP/2 support
Uvicorn
A lightning-fast ASGI server for Python, built on uvloop and httptools.
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.
React Resizable Panels
Resizable, draggable panel group layouts for React with keyboard accessibility and SSR support built in
PyYAML
A full-featured YAML parser and emitter for Python, with C-accelerated bindings
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.
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.
@monaco-editor/react
Drop the Monaco code editor into any React app without touching webpack, rollup, or bundler config files.
tempfile
A secure, cross-platform Rust library for temporary files and directories that clean up automatically on drop.
Floating UI
React hooks and components for building accessible, perfectly positioned tooltips, popovers, and dropdowns.
