I’ve been using SugarSync for almost a year now. I have a little north of 100 Gb stored on their servers and I sync across 2 desktops and one laptop (all Macs).

And although their concept is great and I really wanted it to work, it’s been a nightmarish experience.

SugarSync readily tells you that “All files are backed up and in sync”, but you can never trust that this is actually the case. Some times changed files simply don’t get uploaded, some times they get uploaded but don’t get downloaded to one or more of the other computers that subscribe to the same folder, some times older files from one computer overwrites newly updated files on another computer and some times files get downloaded but they’re given new file names so finding them is the needle in a haystack experience. The desktop client keeps dropping the connection to SugarSync’s servers so uploading and downloading takes forever (my internet connection is stable and 8 Mbps).

Then you contact their so called support and all they do is ask you to send them the log, after which they tell you to reinstall SugarSync and clear cache on all your computers, then they go silent for 5 days until you receive a mail saying that as there has been no activity on the support ticket for 5 days they deem the case solved and close the ticket. And so on and so on.

So my unambiguous recommendation: Stay clear of SugarSync. It doesn’t work.