Apache Kafka is an open-source distributed event streaming platform for building high-throughput data pipelines and streaming applications.
34.2K+90 this week15.7KJavaApache-2.0Well maintainedUpdated 18 hours ago
1 alternative
Best open-source alternatives to Google Cloud Pub/Sub (2026)
Looking for a free, open-source alternative to Google Cloud Pub/Sub? 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 |
|---|---|---|---|
| apache/kafka | ★ 34.2K | Apache-2.0 | 18 hours ago |
FAQ
- Is there a free, open-source alternative to Google Cloud Pub/Sub?
- Yes. The most popular open-source alternatives to Google Cloud Pub/Sub on Repolode are kafka.
- Which Google Cloud Pub/Sub alternative should I choose?
- kafka 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 7, 2026. How Repolode works