Ken Case on OmniPresence, which ships tomorrow:

"OmniPresence is designed to work well with any Mac app which supports OS X’s Auto Save and Versions. Using the same underlying document coordination as Versions, OmniPresence lets your app know when a document has been changed on another device, and double-checks to make sure it always syncs a current and complete copy of any documents currently being edited."

…

"We believe in building solutions that will stand the test of time, and we believe that your data should be yours to control—whether you’re syncing your personal files or your company’s confidential information. So rather than use a proprietary syncing service which might not be available in five or ten years, OmniPresence is built on top of open web server technologies."

OmniPresence is a new syncing tech from the Omni Group, and it ships tomorrow. You know it's going to be solid because … well, it's written by the F'n OmniGroup and that's what they do.