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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Playwright
Cross-browser end-to-end web testing and browser automation with a single API for Chromium, Firefox, and WebKit.
Express
The fast, unopinionated, minimalist web framework for Node.js
Next.js
The React framework for production: file-based routing, server rendering, and Rust-powered builds.
pytest
The Python testing framework that makes writing small tests easy and scales to complex functional test suites.
FastAPI
A modern, high-performance Python web framework for building APIs with automatic validation, serialization, and interactive docs.
Electron
Build cross-platform desktop apps with JavaScript, HTML, and CSS on Chromium and Node.js
Hono
A small, ultrafast web framework built on Web Standards that runs identically everywhere.
TanStack Router
A fully type-safe React router with built-in data loading, caching, and URL search-param validation.
aiohttp
Asynchronous HTTP client and server framework for Python's asyncio, covering both API calls and building web/WebSocket services.
Transformers
State-of-the-art pretrained models for text, vision, audio, and multimodal inference and training.
Docusaurus
React-based static site generator for building fast, maintainable documentation websites.
NestJS
A progressive Node.js framework for building efficient, scalable, and maintainable server-side applications in TypeScript.
Expo
Open-source framework for building universal native apps with React that run on Android, iOS, and the web.
Typer
Typer is a Python library for building CLI applications, using type hints to generate arguments, options, validation, help text, and shell completion automatically.
Bootstrap
The world's most popular front-end framework for building responsive, mobile-first sites
Fastify
A fast and low-overhead web framework for Node.js, built around schema-based validation and a plugin architecture
Gin
A high-performance HTTP web framework for Go, built on a zero-allocation radix-tree router with an Express.js-style API.
SvelteKit
The official application framework for Svelte, providing filesystem routing, server rendering, and adapters for any deployment target.
LangChain
The most widely adopted Python framework for building LLM-powered agents and applications
Laravel
The expressive, elegant PHP framework for building modern web applications
Starlette
A lightweight ASGI framework/toolkit for building async web services and apps in Python
Flask
A lightweight WSGI web framework for Python that scales from a single file to complex applications.
preact
Fast, 3kB React-compatible Virtual DOM library with the same modern component API.
LangGraph
A low-level orchestration framework for building stateful, multi-actor LLM agents as graphs
