SyncPhotos syncs iPhoto Libraries across computers. It finds photos and videos on the other computer(s) that you don't already have. Select the ones you want and SyncPhotos retrieves them and imports them into your iPhoto Library.
SyncPhotos can automatically retrieve new photos and videos as well. Choose to automatically retrieve all new items, only new items from selected albums, and/or only new items from the past month, or two, three, six or twelve months.
SyncPhotos can retrieve new photos and videos from multiple computers. You can set up 1-way or 2-way sync between/among some or all of your computers.
SyncPhotos only works with computers that are on the same network, for example using the same Wifi network or plugged into the same Ethernet network). It uses Apple's Bonjour technology to communicate.