D. Smolken was kind enough to allow bigcat Instruments to create a Kontakt 5 instrument using his excellent double bass samples. He also has SFZ mappings available. The double bass has bowed and plucked samples with multiple velocity layers and round robins.
The original samples are 2013 D. Smolken. This multisampled double bass by D. Smolken is licensed under a Creative Commons Attribution 3.0 Unported License. Consider the Kontakt version to be the same. This instrument can be used commercially as long as credit is given to D. Smolken.