LiveSync4D provides the ability to synchronize one 4D Database to another. LiveSync4D uses TCP/IP and is compatible with 4D, 4D Server, 4D Runtime Classic, and 4D Engine. As long as the structures are identical, you can use any version of 4D on each end of the sync.

For example, a 4D Server can be sync'd to a 4D Runtime. Or multiple 4D Runtime's can be sync'd to a 4D Server. Or, 4D can be sync'd to another copy of 4D. You get the picture. Any version of 4D can be used for your sync'ing.