Debezium is an open-source CDC platform that streams row-level changes from databases such as PostgreSQL, MySQL, and MongoDB, typically via Kafka Connect.
Distributed SQL query engine for federated analytics
Processing
Trino is an open-source distributed SQL engine that queries data where it lives — object storage, lakehouse table formats, and operational databases — through a single interface.
Apache Kafka is an open-source distributed log for high-throughput, durable event streaming, with a large ecosystem including Kafka Connect and Kafka Streams.
Apache Flink is an open-source framework for stateful computation over unbounded and bounded data streams, with event-time processing and exactly-once state consistency.