Publish-subscribe messaging rethought as a distributed commit log
https://kafka.apache.org Formula was removed
Last version was
kafka@0.80 requires the following formula to be installed:
zookeeper 3.4.10 Centralized server for distributed coordination of services

Recent formula history

ilovezfs kafka@0.80: delete (#17101)
FX Coudert kafka@0.80: import from homebrew/versions.

Formula code at GitHub