google for symless synergy download and you get a link to an unindexed page for symless sharemouse
DO NOT CLICK ON THE LINK ON THIS PAGE as it points to a download of an obsolete freeware version of sharemouse
the official indexed symless synergy download page makes no mention of this product
if you want to try the NON linux NON opensource sharemouse then download it from here instead
the portable version is nice in that it doesnt install anything and can run from usb !
if you want to buy the non linux non opensource sharemouse instead of symless synergy then you can go to their shop
however symless have plenty to learn from their non opensource competitor sharemouse is 100 x easier to configure screens on as there is ZERO config required and no messing around with IP addresses or computer names