This is why I think Mountain Lion is Essential to iOS Users. Mountain Lion gives more relationship to iOS users one way or another. Its all about syncing from one to the other. Lion gives you the Launchpad, Mountain Lion gives you synching and iMessages to all your other iDevices. Making the eco-system for Apple complete from software to software connection.
I have been Beta Testing Mountain Lion since it was out to test and the part that impresses me is Notes Syncing. It’s obvious you can sync notes, from iOS users to your Mac with Mountain Lion installed. Notes has it’s own icon, like it’s own app. It is no longer inside Mail. Notes don’t just sync, it sync right away, to the second. Sometime, it sync so often that when you hit enter for a new line, it would re-load to the previous saved version making a double entry and double work. That’s a definite bug, and since it’s still in Beta, I can live with it
Then of course there is the iMessage. iMessage gives you the ability to send messages to iOS users without touching your iPad or iPhone and type with that virtual keyboard. I can send iMessages with my physical keyboard. iMessage can also communicate with other IM users such on Google, AOL, Yahoo and more. So it’s a one stop shop communication piece that comes with the OS X Mountain Lion.
Then there is the Tab syncing for Safari. This could be useful depends on what you use it for. It is meant for continuity or continuum, so you don’t have to stop working. You can keep on browsing without interruption from iOS to OS X.
Then there is Photo Stream Sharing, making it easy to share your Photo to iPhoto from OS X to iOS users. You can even share videos with the Photo Stream, delete the Photos in your Photo Stream or Delete videos.
Share Photos to iOS Users who is not in the same account is now possible as well. If you have photos you would like to share amongst your friends, all you need to do is find out their email address that is used for their Apple ID and they will get the photos shared to their iOS Device from OS X iPhoto.
Contacts is also in its own category now, meaning that it is no longer inside Mail in OS X Mountain Lion. Just like Notes, you can add or edit Contacts and it will all sync to your iOS Devices and vice versa on the same Apple ID account.
There are more improvements for OS X Mountain Lion, but as far as synching from OS X to iOS, above are the most important that you can use to interconnect your Desktop or Laptop to your iPad or iPhone.