"Thanks to iHub Basic, there is no need to store sensitive data on a far-away cloud service," said Nova Media's Jan Fuellemann. "In addition, the user does not have to use a cable and run iTunes just to add an appointment in the calendar or to change an address."
iHub Basic runs on Mac OS X as a server application and can sync data to other Macs via WiFi or Ethernet. Mobile devices sync via WiFi. If you don't already have a WiFi network, you can use Nova's MoHub (integrated into iHub) to set up an ad hoc network for syncing. The software also offers some backup protection: it saves two weeks worth of contact and calendar information, so you can restore something you accidentally deleted even after you synchronized the error.
iHub costs $30 plus VAT (the company's in Germany) and requires Mac OS X 10.6 Snow Leopard on the server machine (and so the server must be an Intel Mac). Syncing contacts requires Snow Leopard on the other Macs and iOS 4 on the mobile devices; syncing calendars is possible with OS X 10.5 Leopard on the client Macs and iOS 3 on the mobiles.