ArtMerge

Art-Merge is capable of merging and routing up to 20 Art-Net DMX sources to 4 outputs.
Each possible input can be assigned a start channel offset and number of channels to be processed.

Additionally, the channel address at which data starts in each output scream is also programmable.
Inputs may be assigned duplicate sources, allowing multiple consecutive channel groups to be gated out of the data stream.
Art-Merge is designed for Windows XP.