Apple's upcoming Mountain Lion lets users jot down notes, insert photos and images, and share them with friends or colleagues. Notes interoperate with iCloud, updating across the users' range of devices.
Mountain Lion will offer a hub that consolidates email, messages, reminders and alerts.
The Reminders app, well, reminds users of upcoming tasks.
Mountain Lion imports Game Center from iOS, complete with the ability to compete against friends and measure your top scores against those of others.
This robust app lets users send unlimited messages to others using either a Mac or a mobile device running iOS 5.
With Mountain Lion's Twitter integration, users can Tweet links and photos from Safari, iPhoto or Photo Booth.
Mountain Lion's security apparatus offers granular control over what can be downloaded onto the Mac.
In conjunction with an Apple TV, AirPlay Mirroring lets users stream content from the Mac to the television screen.
Apple's iCloud has now expanded to the Mac, letting users sync their data across the entirety of the company's mobile devices, desktops and laptops.
Many Mountain Lion apps will feature a "share" button for sending links, photos, video and notes to contacts.