you must not have looked for long, most of the other OSS tools mentioned in this thread exist for several years already.
These ones (stolen from another comment)?
> CMAK, AKHQ, Kafdrop, Kowl, Conduktor, Kafkatool
Maybe if they had been given better, more descriptive, names they'd have been easier to fit
Some of these had more descriptive names, but the apache software foundation doesn't allow names with "Kafka" as part of the name because it's a protected trademark apparently.