LastPass

The Easy, Any-Browser, Any-OS Password Solution

Excerpt:

LastPass uses a single master password to log into your account, sure, and if you lose that, you have to jump through quite a few hoops to get it back. But it is, technically, recoverable.

Comment: Official site lastpass.com

I'm thinking about trying it out. Any thoughts or perspectives? The multi-platform appeals to me as I am Windows at work and Mac and Linux at home