> What's the difference between LGPL? Not GPL compatible (e.g. commercial) programs/libraries are allowed to link against it. Aside from this it is exactly like GPL, i.e. if you derive you project from it or just integrate it, you have to make it LGPL as well. So unless you keep it separate from the app server -- in this case the project policy is not completely clear to me -- it is no option. :-( CU, Ingo