LastPass is a freemium cloud-based password management service.
Works on Windows/OSX/Linux, Android/iOS/WP/BlackBerry, Chrome/Firefox/Opera/Safari/IE.
Pro Seamless autofill and password generator via plugins for all popular browsers
All common browsers, including Opera, have plugins that allow automatically filling in forms and generating passwords. All form fill information syncs across all platforms, devices and browsers. Password generator can be adjusted to use or exclude certain characters and patterns.