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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Express
The fast, unopinionated, minimalist web framework for Node.js
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.
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.
NestJS
A progressive Node.js framework for building efficient, scalable, and maintainable server-side applications in TypeScript.
Typer
Typer is a Python library for building CLI applications, using type hints to generate arguments, options, validation, help text, and shell completion automatically.
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
Flask
A lightweight WSGI web framework for Python that scales from a single file to complex applications.
LangGraph
A low-level orchestration framework for building stateful, multi-actor LLM agents as graphs
Django
The high-level Python web framework that turns database models into secure, working web applications in record time.
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
napi-rs
Build precompiled Node.js add-ons in Rust via Node-API, no node-gyp required
OpenAI Agents SDK
OpenAI's provider-agnostic Python framework for building multi-agent LLM workflows with tools, guardrails, and tracing.
Mastra Core
The TypeScript framework for building AI agents, workflows, and RAG apps with unified access to 40+ LLM providers.
Streamlit
Turn a Python script into a shareable data app in minutes, with no frontend code
Pulumi
Infrastructure as Code in your favorite programming language, powered by a shared multi-language deployment engine.
grammY
The modern TypeScript framework for building Telegram bots on Node.js and Deno
Gradio
Build and share machine learning web apps and demos in pure Python.
Deep Agents
The batteries-included agent harness for building long-horizon LLM agents
