bBase2: is not bad, slows down with larger dbs.
db: tried it, but, don't remember.
I think these first 2 are available on aminet.
QuickFile: from the same people who made Final Data, but much earlier. From a coverdisk.
Superbase: the only relational db listed here. It has old requesters and has a different "cassette player-like" interface.
Final Data: very fast, no bugs (that I've found), handles large dbs with ease, good printed output. My favorite.
Spitfire: excellent address book and calender. Designed as a Palm pda interface. Aminet. May require 68020. The other favorite.
DataStore: most of the functionality of Spitfire. From a cover disk or maybe Digita's CD suite.
There are other selections on Aminet.
