| Confluent Schema Registry | Stores a versioned history of all schemas. Supports Avro, JSON Schema, and Protobuf schemas. |
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| Azure Schema Registry | Provides a central repository for schemas for Event Hubs. |
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| Apicurio Registry | Stores event schemas and API designs. Supports OpenAPI, AsyncAPI, GraphQL, Apache Avro, Google protocol buffers, JSON Schema, Kafka Connect schema, WSDL, XML Schema (XSD). |
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| AWS Glue Schema Registry | Supports Avro, JSON Schema, and Protobuf schemas. |
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| Amazon EventBridge Schema Registry | Provides schemas for EventBridge events. |
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| Google Cloud Pub/Sub schemas | Supports Apache Avro and Protocol Buffer frameworks. |
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