Self-hosted, language-agnostic real-time PUB/SUB messaging server that pushes messages to users over WebSocket, SSE, HTTP-streaming, GRPC and WebTransport.
11K+10 this week754GoApache-2.0Well maintainedUpdated 13 hours ago
1 alternative
Best open-source alternatives to PubNub (2026)
Looking for a free, open-source alternative to PubNub? These 1 projects can replace it. Each one passed our quality screening and is explained in plain words, so you can compare stars, license and maintenance at a glance.
Quick comparison
| Project | Stars | License | Last commit |
|---|---|---|---|
| centrifugal/centrifugo | ★ 11K | Apache-2.0 | 13 hours ago |
FAQ
- Is there a free, open-source alternative to PubNub?
- Yes. The most popular open-source alternatives to PubNub on Repolode are centrifugo.
- Which PubNub alternative should I choose?
- centrifugo has the most GitHub stars and is released under Apache-2.0. Compare the license and last commit of each option in the table above before choosing.
How this list is made: AI reads each project's documentation to match it with products it can replace, every project passes our quality screening, and the list is ranked by GitHub stars. Stars updated Nov 6, 2026. How Repolode works