Both UniVerse and UniData are equally well supported on Windows, Unix and Linux. They have some interesting features that are still reasonably unique in the database world. E.g. Built-in transparent record encryption, including both key & index.
http://2012.nosql-matters.org/cgn/wp-content/uploads/2012/06...
Full disclosure: I'm the product manager for the databases.
You're probably familiar with the Eclipse distribution management package then (not to be confused with the IDE), that's the app I was referring to. I've been using Universe since the Vmark days, ADDS Mentor and Sequoia before that. Pick type databases are sadly under-rated. Possibly because there's never really been any kind of marketing aimed at indy developers and/or students?
