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
Kind2
Category
Sort:Used by Most Apps
typescript-eslint
The official meta-package bundling the TypeScript ESLint parser, plugin, and rule presets behind a single typed config() helper.
pytest
The Python testing framework that makes writing small tests easy and scales to complex functional test suites.
Commander.js
The complete, battle-tested framework for building Node.js command-line interfaces.
Uvicorn
A lightning-fast ASGI server for Python, built on uvloop and httptools.
FastAPI
A modern, high-performance Python web framework for building APIs with automatic validation, serialization, and interactive docs.
Oxlint
Rust-based JavaScript/TypeScript linter that runs 50-100x faster than ESLint, with zero configuration required.
SWC
Rust-based JavaScript/TypeScript compiler, a drop-in super-fast alternative to Babel
Ruff
An extremely fast Python linter and code formatter, written in Rust, built as a drop-in replacement for Flake8, Black, isort, and dozens of plugins.
yargs
The modern, pirate-themed command-line argument parser and command framework for Node.js
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.
Gunicorn
A fast, lightweight pre-fork WSGI and ASGI HTTP server for running Python web apps in production on UNIX.
mypy
Optional static type checker that catches Python bugs before you run your code
Flask
A lightweight WSGI web framework for Python that scales from a single file to complex applications.
Alembic
Database migrations tool for SQLAlchemy with autogenerate and transactional DDL
Typer
Typer is a Python library for building CLI applications, using type hints to generate arguments, options, validation, help text, and shell completion automatically.
Django
The high-level Python web framework that turns database models into secure, working web applications in record time.
LangChain
The most widely adopted Python framework for building LLM-powered agents and applications
Starlette
A lightweight ASGI framework/toolkit for building async web services and apps in Python
LangGraph
A low-level orchestration framework for building stateful, multi-actor LLM agents as graphs
django-rest-framework
The most widely-used toolkit for building Web APIs on top of Django, with serializers, viewsets, and a built-in browsable API.
FastMCP
The fast, Pythonic framework for building Model Context Protocol servers, clients, and apps
Pydantic AI
A type-safe Python agent framework built by the Pydantic team
Echo
A minimalist, high-performance Go web framework with a radix-tree router, built-in middleware chain, and first-class HTTP/2 support.
