Comparing
Async http client/server framework (asyncio)
Fast, unopinionated, minimalist web framework
| Metric | aiohttp | express |
|---|---|---|
| Ecosystem | Python | npm |
| Difficulty | Beginner ✓ | Intermediate |
| Weekly downloads | 0 | 95.8M↑ |
| Latest version | v3.13.5 | v5.2.1 |
| Recipes | 1 | 1 |
aiohttp only
Shared
express only
Use aiohttp when you need a battle-tested async HTTP client or server, especially in applications that make many concurrent HTTP calls (scrapers, API aggregators) or build lightweight async web services. It has a mature ecosystem and is widely used in production.
Use Express for REST APIs and web servers in Node.js, especially when you value a minimal core with full control over what you add. It's the most documented Node.js framework with the largest ecosystem of compatible middleware.
For new async API projects, FastAPI (built on Starlette/uvicorn) has better developer ergonomics, automatic validation, and docs. For synchronous scripts, requests is simpler. httpx offers a compatible API with both sync and async modes if you want flexibility.
Express is synchronous by default and has poor built-in TypeScript support. For TypeScript-first APIs, try Fastify or Hono. For full-stack apps with server-side rendering, use Next.js. For edge/serverless, Hono's smaller footprint is better.
aiohttp
express