AI Roboform is an awesome piece of software. When I tried out MacOS for a few days the one and only program I missed was Roboform.
Roboform has two main functions which are totally separate.
1. It automatically fills forms on the web for you. You put in your name, address, phone number, age, etc. and it will fill out any form on any page with just one click. This is insanely helpful for doing things like signing up for forums or buying things online. You can even put multiple addresses.
2. It remembers all of your login information for every site. When I tell people about this they invariably say "Yeah, firefox does that automatically."
It's very different, though. Roboform also remembers the login page, so you just click the name of the site you want to go to and it goes there and logs you in in one step. VERY convenient.
The whole thing is password protected and encrypted, so you don't have to worry about anyone else seeing your info. It can be used on Firefox, Internet Explorer, or many smartphones.
There's also a feature called SafeNotes which lets you keep short notes in the same place that are password protected. I use this for things like my Fedex # and frequent flyer numbers.
You can try a free trial at Roboform