I have either bought or tried every database for storing software/hardware registrations, credit card numbers, bank account data, website logins, and etc ... and Data Guardian is the best overall in its class. I can make a template for each category with any thing I want in it; then when I have something new for that category, highlight the template; then click on duplicate and then just fill in that template with the new data. It is the most versatile, and once the templates are made, so easy to use. I store everything in Data Guardian. And the author keeps improving it with small updates or fixes often. But it has never given me a problem ... it is very stable on the latest Mac Pro and OSX.