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Apache Iggy vs NATS

The same facts for both, read from GitHub every night, and the relation a person reviewed.

Apache IggyNATS
LanguageRustGo
LicenceApache-2.0Apache-2.0
Stars5k21k
Latestserver-0.9.0v2.15.0
Last push2026-10-062026-10-06
Release cadenceabout 99 days between releasestoo few releases
Active contributors50 commit authors on the default branch in the last 90 days33+ commit authors on the default branch in the last 90 days
Flagsnonenone

How they relate

  • Both replace Apache Kafka. Alternatives to Apache Kafka →

    PartialApache IggyPersistent message streaming in Rust over TCP, QUIC and HTTP, with its own protocol and clients.

    PartialNATSDurable streams with JetStream, without Kafka's protocol.