Oddly enough, there aren't too many contact management tools for Android that aren't also dialer replacements, or focused entirely on replacing whatever built-in tool you have on your device already. We have to agree with our iOS counterparts on this one—Smartr by Xobni is the best address book for Android, if you're looking for a contact manager that actually makes it easier to find and interact with the people you need to talk to.
Apple's Mountain Lion operating system software for the Mac brings even more of the iPhone/iPad features to the Mac. The juiciest payoff here is the suite of Mac apps that now mimic what's on the iPhone/iPad. Through your free iCloud account, all of these apps are synced instantly and smoothly across all your Apple gadgets.