collection managers with SQL backend?

[stan]

I'm catching up on reading this weekend, and tellico  kept coming up in
the articles I read. So I downloaded and installed the package for it.
Looks very close to what I have been wising for for years.

But, it doesn't use a database for storage.

So, let me ask what other "collection managers: are out there that do use
an SQL based database (preferably Postgres) fro a backend?

-- 
Unix is very simple, but it takes a genius to understand the simplicity.
(Dennis Ritchie)