WebOS

- Interface is heavily gesture based.

- Capacitive touchscreen.

- In "card view," applications are live as opposed to just a snapshot of the program's last state.

- Quicklaunch bar holds icons for several of the most commonly used applications.

- Pulling a finger up from the gesture bar onto the screen brings up a launcher ribbon that allows for quick launching of favorite applications.

- Swiping on the gesture bar allows for forward and backward navigation.

- Notification area alerts you to important updates on email, phone, calendars etc.

- On the home screen, start typing to bring up the "universal search."

- "Synergy" makes it easy to pull contacts from various web services to pull in your online contacts.

- Also pulls calendar notifications from linked online services.

- "Synergy" appears in messaging too: in the messaging app it's easy to switch between email, SMS, MMS and IM and all messages are kept in one place, regardless of which messaging service they were sent through.

- WebKit browser does an excellent job.