Dear Customer,
You can consider Redistribution License or Enterprise license. This Redistribution License allows DotNetGallery to be distributed within a single commercial application. It also entitles unlimited number of developers within the company to install and use the product for that single commercial application development (for 1 application only).
Redistribution license is for a business has a product, say online email or forum to sell. This product needs DotNetGallery to be part of it. Embeded in the package and sell to the end users. Say if the redistribution license is to cover your online email system, then you can't use it for your forum as it will require another Redistribution license. Enterprise license = unlimited Redistribution.
Thank you for asking