kafbat UI (https://github.com/kafbat/kafka-ui 2,749 ) (Apache 2.0, 1.5.0 of 20 April 2026) continues Provectus's kafka-ui, which stopped at 0.7.2 in April 2024. It browses topics, messages, consumer groups, Connect and schema registries, and reads broker metrics over JMX. Its one container (port 32080) showed Tracking Consumer Lag's stalled group:
Redpanda 64,862 Console (https://github.com/redpanda-data/console 4,334 ) (3.12.0, 16 September 2026) offers the same functions against any Kafka 129 cluster, with a polished message viewer. Its core is under the Business Source License (free to use, not to resell as a service); login (OIDC, SSO), RBAC and partition reassignment need a paid enterprise licence.