Mac OS X Mountain Lion
If you like your iPhone, iPad, or iPod touch, you're going to love Mac OS X Mountain Lion ($TBA). This sequel to last year's Lion ups the iOS-like ante with deep iCloud integration, new — yet totally familiar — additions like Reminders, Notes, and Game Center, as well as a revamped, iMessages-handling iChat — now known as simply Messages — a new Notification Center, Share Sheets, Twitter integration, and AirPlay Mirroring. And knowing Apple, there's probably at least a few new features we haven't heard about yet. Roaring onto a Mac near you this Summer.