How to license and distribute a password protected Model Builder Toolkit?

Discussion created by jwinn34 on Apr 24, 2014
Latest reply on Apr 27, 2014 by kimo
Does anyone have any advice on what license to use to when distributing a model Builder Toolkit for free or non commercial use, or with retaining right sot charge for commercial use?

Because the Model builder Tool is essentially ESRI code that is able to be password protected by the user I am unsure what license versions are appropriate.

Any experience able to be  shared?

I am currently looking at the GPL v3 license, but not sure on a different license to use for commercial use.