I've been using an old postcarware Appleworks software-inventory program for close to 10 years, and was looking for something that looked a bit more polished that my wife can use on her system. (never could get the fonts and fields to be uniformly justified to my liking in what I was using, but I could also edit the extra fields it had as needed.)

PSD has the basic fields one needs (a "Product cost" field, and either password or encryption would be nice) but not having those is not a big detriment (keep the app in Home folder and use Filevault).

It runs a FileMaker db (which is good, imho) and it works just fine on Tiger.

Nice to have found this, and developers donateware suggestion is very fair.