Some very helpful folks pointed me to pgmodeler recently. I realize this list may not be the appropriate forum for discussing this, and would welcome pointers to a more appropriate forum. Having said that, this discussion may be a bit more generic. I have seen a number of open source products (Amanda is a good example), where a company sort of "takes over" the project, the company's bossiness plan is generally that of making money on support. Most of these companies have a community edition, which trails development of the product with their enhancements. U understand that this model is acceptable to GPL licensed software. The company supporting pgmodeler seems to have a different model. It looks like they provide a version of the tool that requires a license key, with limited life span. What I am trying to do, at the moment is get a complete understanding of their bossiness model, regarding the source code for this project. Thanks for any input on this. -- "They that would give up essential liberty for temporary safety deserve neither liberty nor safety." -- Benjamin Franklin