Raindrop.io - All your articles, photos, video & content from web & apps in one place.
SoundNode - SoundCloud desktop app (OS X, Windows, Linux)
Pocket - When you find something you want to view later, put it in Pocket.
Cumulus - A SoundCloud player that lives in your menubar.
Diigo - Diigo is a powerful research tool and a knowledge-sharing community
Sleeve - Your currently playing track displayed right on your desktop