Hey, Looks nice this synchroedit soft.
It's licensed under MPL & LGPL, as it's written on their webpage (but as Mods, it could have any license).
It would be very nice to see it integrated in Tiki, for sure, Josephine.
I was wondering, as another approach, why anybody has developed a "merge" feature for synchronous edits on a wiki page... (calling to merge function in the server, or similar... and merging changes in the simultaneous edits...
(I've heard that DfWiki, module from Moodle.org, has this merge feature in its roadmap).