I started installing and learning WSS (Windows SharePoint Services) 3.0 this past week. I brought a PC home from work and installed Win2003 on it and then started installing all of the required software needed to run WSS. Interesting, it's one of Microsoft better products and it's free. I haven't touched Apache Tomcat in quite some time but I believe it could compare to WSS in some respects.
WSS has a lot of templates that are free downloads. Many very good templates that you would use in the Enterprise. Check out this page...click here
I would say that I've spent at least a day and a half building the server up. This includes setting up AD, SEP11, etc..... on it. I did a little more than just setup WSS.
I was trying to add custom templates but some of them didn't take yet. I need to figure out why. I suspect I wasn't holding me my mouth quite right. Who knows it could have been the fact that I've had a sinus infection the whole time I was installing stuff.