Hi Drupalistas! This question has come up a couple of times in our local Drupal user group meetings, but the answer that was given didn't sound quite right to me: If I code a module for Drupal, does it -have- to be GPL? That is, is a module considered a 'derivative work' of Drupal? Or is a module considered it's own entity from an intellectual property standpoint (that is, can I use something like http://www.raizlabs.com/software/phpobfuscator/ to obfuscate my source code and sell my module without licensing it as GPL?) Because a module executes as a part of Drupal, must it be GPL? Taking that further, can we apply the same question to things like the Linux kernel? Is a kernel module required to be GPL? Can I sell a proprietary kernel extension? Thanks, Cameron Eagans