I took a look at that and I'll definitely stick with Synergy. Although initial install is probably easier because of auto configuration it's missing some key features that Synergy provides, like copy/paste and more flexible configuration options. I wouldn't call it better than Synergy, just easier to install and setup.
With 3 PC's at my desk it would cost $45 for Sharemouse ($14.95 per PC), Synergy is free.
It only works with Windows and Macs. I have a FreeBSD UNIX system in the mix, and Synergy runs on Windows, Mac, UNIX and Linux systems. It wouldn't work for me.
I would lose my copy/paste between PC's and across platforms, as the clipboard follows the mouse with Synergy. No clipboard function with Sharemouse. I can copy text from a Windows doc, then move the mouse over and paste the text into an email on the UNIX screen, or go the other way. I do that all day long and without the ability to copy and paste across PC's/platforms I'd be backing up 5 years to when I used a KVM switch.
For some it probably is the perfect solution, but personally I'd never use it.
1) No UNIX/Linux versions.
2) No clipboard or ability to copy/paste across PC's - major shortcoming
3) Limited configuration options to set up screen wrapping, direction, etc.
4) I'd have to pay for it.
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