It looks like there's a Firefox plugin in the works: https://github.com/jvenant/passff#readme Now we just need a Chrome one.

This is what really pulls me to LastPass. The zero to two clicks it takes to fill in a password is just too good.

Someone made an iPhone app and Android is under development.

I'm that someone, and it was written in a weekend on a jail broken iPod touch on iOS 3.2. So, its unlikely that it still works (and I wouldn't recommend using it even if you can get it to work). I long since switched (back) to lastpass due to the pain of managing ssh keys across multiple devices.