I fully agree with the portability argument. That's one of the biggest strengths of your product. I understand you want to keep it and protect it. I actually am an experienced developer. I'm trying to think with the deployment and the production in mind. Thus... * From a deployment point of view, I would personally prefer to use SQLite as a pure CLI tool which can be installed with the OS package manager, and not to have to deal with C files and their compilation... * From a security point of view, and with the understanding I have of it, it seems to me that deploying a module which is compiled from an external, unidentified and unversioned code file could be refused in a large or relatively secured environment. SpatiaLite perfectly fit my needs, so I will use it. Thank you for the tips and answers. RS