Drupe - Next generation contact manager and dialer.
Muzzy - it’s a tiny and gorgeous iTunes companion that lives on your menu bar. For Mac OSX, its free!
Truecaller - Find a person by a name or phone number worldwide for free using Truecaller.
Skip Tunes - Control iTunes, Spotify, or Rdio from your Mac's menubar
Google Contacts - Google Contacts is Google's contact management tool that is available in its free email service Gmail, as a standalone service, and as a part of Google's business-oriented suite of web apps Google Apps.
Plaaying - Share, control, and keep on Plaaying music on your Mac.