Karapace

A free and Open Source drop-in replacement for Confluent Schema Registry and the Kafka REST Proxy. Use it with any managed provider or host it yourself, and join the direction of the project.

A schema registry for your data schema versions, with support for Avro, JSON Schema and Protobuf formats and full compatibility checking.

A powerful HTTP interface to your Apache Kafka® clusters for producing and consuming messages without a native Kafka client.

Trusted, operated at scale and actively developed by some of the biggest Apache Kafka service providers around. Battle-tested and serving many organisations well.

A leader/replica architecture ensures high availability and sane load-balancing across your Schema Registry instances.

Built-in metrics and OpenTelemetry support give operations teams the visibility they need to run Karapace in production.