LanguageTool - Free proofreading tool for OpenOffice, LibreOffice, Firefox, and Chrome.

BandNext - Discover bands that sound similar to artists you already love with BandNext. A single click saves your results to a Youtube playlist.

Grammarly - Clear, effective, mistake-free writing everywhere you type.

Spotify - Map shows when two people play same song at same time

Editsaurus - Highlights potential pitfalls in your writing to encourage good habits.

stats.fm - With the click of a button you'll be logged with your Spotify account and you'll instantly gain access to a valhalla of cool stats and insights.