websockets vs autobahn-python
Python WebSocket libraries compared
websockets and autobahn-python both provide Python clients and servers for WebSocket communication. websockets focuses on WebSocket functionality with asyncio, threading, and a Sans-I/O layer, while autobahn-python also supports WAMP applications and offers Twisted or asyncio integration.
websockets: Build WebSocket Servers and Clients in Python
websockets is a Python library for WebSocket servers and clients, built on asyncio with additional threading, Trio, and Sans-I/O implementations. It focuses on protocol correctness, straightforward message handling, robustness, and performance.
autobahn-python: Build WebSocket and WAMP Applications
A Python library for building asynchronous WebSocket clients and servers, plus WAMP applications with remote procedure calls and publish-subscribe messaging. It supports Twisted and asyncio and requires Python 3.11 or later.
| websockets | autobahn-python | |
|---|---|---|
| Language | Python | Python |
| License | BSD-3-Clause | — |
| Stars | 5.7k | 2.5k |
| Forks | 621 | 769 |
| Last analyzed | Oct 15, 2026 | Oct 6, 2026 |
Key differences
- websockets focuses on WebSocket protocol support, while autobahn-python also implements WAMP for routed RPC and publish-subscribe messaging.
- websockets offers asyncio, threading, and Sans-I/O APIs; autobahn-python supports asyncio and Twisted.
- autobahn-python requires Python 3.11 or later; websockets' provided description does not specify a minimum version.
- websockets reports a BSD-3-Clause license; autobahn-python's repository metadata reports NOASSERTION, while its README describes the project as MIT licensed.
- websockets has 5.7k stars and 618 forks; autobahn-python has 2.5k stars and 770 forks.
- WAMP applications built with autobahn-python require a WAMP Router to connect participants; websockets is focused on WebSocket functionality rather than a broader application framework.
Choose websockets if you…
- need WebSocket clients or servers with asyncio or synchronous threading APIs.
- want a Sans-I/O layer to integrate WebSocket handling with your own I/O.
- need a focused WebSocket library rather than WAMP functionality or a general-purpose HTTP framework.
Choose autobahn-python if you…
- need WAMP clients or components for RPC and publish-subscribe messaging.
- want to use WebSocket or WAMP support with Twisted or asyncio.
- need WAMP serialization options or authentication methods such as cryptosign and SCRAM.
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This comparison is generated with AI from the OSRepos analyses of both projects. Always check each project's repository and documentation before choosing.