Leo suggestions were:
Moveable Type is a weblog software package, but you can do much more with it than just blog. Go to the Moveable Type website and visit the Spotlight Sites. This section gives you an idea of what you can do with Moveable Type. Movable Type is free for personal or nonprofit use, but it's not free for commercial or for-profit sites. Moveable Type is Perl-based.
Leo thinks PostNuke can be what you're looking for if you want a content management tool with a lot of flexibility. The software is PHP-based.
This is actually a suggestion from the folks at TechTV Source. It's $45 for a noncommercial license, $125 for a commercial license.
Can all be seen at The Screen Savers