Eltima Software has released FlexiHub (http://www.flexihub.com), a file sharing solution for Mac OS X. It was specifically developed for sharing of USB and serial (COM) ports over network.
According to the folks at Eltima, iIt doesn’t matter where shared ports with devices are; they can be across the road, in the same room, or across the globe. FlexiHub allows management of remote devices, connection and disconnection are held without user’s physical presence at the USB or serial port.
Paid subscriptions allow sharing multiple devices among multiple nodes (computers) for unlimited periods of time. Users can use FlexiHub’s own redirection server and automatic reconnection in case connection with a shared device is interrupted. Pricing starts at $6.59 a month.