Cel Kunststoffen, a research group of the KHLim, uses Xoops for their portal dedicated to the high-end CAD/CAM package Pro/Engineer. The portal is used to support students working on their mechanical designs and companies seeking Pro/E support. We are working on a new theme but you can already take a look at http://celkunststoffen.khlim.be/cad/

If you're anxious to know what Cel Kunststoffen does, you can take a look at http://celkunststoffen.khlim.be

We have evaluated several other portal engines (phpnuke, zope, phpwebsite, ...) but none has the same overall quality that Xoops has (well written source code, good performance, good functionality, ...). Keep up the good work guys !