* [kafgres 0.3.0](https://github.com/RayElg/kafgres) – PostgreSQL extension that embeds a Kafka broker so unmodified Kafka clients store topics, offsets, and logs transactionally in the database.

* [TBMQ v2.4.1](https://github.com/thingsboard/tbmq) – Scalable and fault-tolerant MQTT broker capable of handling millions of concurrent connections and messages.