Sandy, I received a reply from the SyncTogether folks... There is a 14-day demo option. Here are the instructions:
Thank you for your interest in Mark/Space's Missing Sync
You can check out a trial version of The Missing Sync
prior to purchasing, by going to our downloads page at:
<http://www.markspace.com/downloads.html>
http://www.markspace.com/downloads.htmlFor SyncTogether:
Under “Sync Together | Available Updates”
Click on the Download version 1.0.1 link
You must be running Mac OS 10.4.8 or later and
all machines must be on an identical OS level.
I recommend 10.4.9 and above.
When prompted for a registration code,
choose Register Later. That will delay
registration for 14 days while you try
it out.
We don't offer technical support on our
trial versions, so please read the user
guide after installing and back up your
data first.
We recommend that you turn off your
firewall and anti-virus software
whenever downloading, installing,
or registering The Missing Sync,
as they may interfere with some of
our processes.
Remember to turn your firewall and
anti-virus software back on after
you have completed.
And, always backup all your data
before making any system changes
such as installing or upgrading
software.