SoundCloud MP3 Downloader
Add download link to all SoundClould tracks
Control soundcloud.com from within a toolbar panel
Web Player for Spotify™
Wrapper window for Spotify's web-player with easy access toggle, next and previous buttons
Text-to-Speech (Google™ & HTML5)
Text to Speech is a text to speech engine with natural sounding voices.
Google™ Hangout Seen Blocker
Google™ Hangouts Seen Blocker allows you to read your hangouts without notifying the sender.