Magic Remote will turn the Music app you already have in your Pebble into a remote control for your mac. It currently works with Spotify, iTunes, VLC and the keyboard itself. 

Memoface allows you to have a note in your watch face always you want, just in case you want to remember. It works with the accelerometer. 

Twebble is the first full-featured Twitter client for the Pebble. It works with SDK 2.0 and provides a unique way to check Twitter from your wrist.

You can check your timeline, mentions and even your profile from the app. You can also take action by facing or retweeting tweets.