Kroxylicious is the snappy open source proxy for Apache Kafka®.
See how it works in 3 minutes:
https://youtu.be/xLOjKScpJ3Q

Kroxylicious, the snappy open source proxy for Apache Kafka®
| Website | https://www.kroxylicious.io |
| GitHub | https://www.github.com/Kroxylicious |
Kroxylicious is the snappy open source proxy for Apache Kafka®.
See how it works in 3 minutes:
https://youtu.be/xLOjKScpJ3Q

As always the Kroxylicious team are very pleased to announce the release the 0.19.0 release (https://kroxylicious.io/blog/kroxylicious-proxy/releases/2026/03/04/release-0_19_0.html).
Kroxylicious will now bite down on Kafka 4.2 RPC calls, snack on idle connections and other quality of life improvements.
The Kroxylicious projects is excited to announce v0.18.0.
This release focused on supporting authentication both from the broker and in proxy!
Release announcement: https://kroxylicious.io/blog/kroxylicious-proxy/releases/2025/11/28/release-0_18_0.html
GitHub: https://github.com/kroxylicious/kroxylicious/releases/tag/v0.18.0
Maven Central: https://central.sonatype.com/search?q=g:io.kroxylicious%20v:0.18.0
Kroxylicious is pleased to announce that 0.17.1[1] is now generally available!
This is a patch release to allow older librdkafka clients to enable compression.
We are working on many more interesting features in v0.18.0
📣 Kroxylicious 0.14.0
- new AuthN APIs (more to come here)
- new metrics for tracking network stalls
- Fixing support for encrypting messages over 1mb (we don't judge the messages we proxy...)
- Better support for negotiating protocol versions
Whats that? You want a version of Kroxylicious thats supports Kafka 4? We got ya! https://kroxylicious.io/blog/kroxylicious/releases/2025/05/09/release-0_12_0.html
The Kroxylicious team are pleased to announce the project is now part of the Commonhaus foundation. We believe this is an important step in providing a stable basis for you, our community, to build around and build your production infrastructure upon.
The Kroxylicious project is very pleased to announce the 0.11.0 release of our Junit5 Extension. This release introduces support for Apache Kafka 4.0. Support for earlier versions of Kafka is maintained - including support for Kafka clusters with based Zookeeper controllers. Just put the version of Kafka you want to use on the classpath - and everything else is automatic.