Modern instant messaging
Flamingo is a beautiful instant messaging client for OS X
with support for Google Hangouts, Facebook, and XMPP.
Music, plain and simple
Sonora is an elegant audio player for OS X with a central music queue and support for many audio formats.getsonora.com
Shortcuts made easy
Snap automatically assigns keyboard shortcuts to apps in the Dock and allows for easy configuration of custom shortcuts.indragie.com/snap