Adstream

http://www.adstream.com

This refers to the type of licence the DAM system software is supplied under. Proprietary means that the developer restricts access to the source code (the instructions used to generate the software). Open source means that the developer provides full access to the code so you can modify it yourself. Split model is hybrid and means they may offer both options with some restrictions removed (or added) depending on the model chosen. If split is selected, it is advisable to verify the differences with the vendor.