recommendation of software to use for web-based systems?

["LTG" <ltg@nyc.rr.com>]

I just setup the most recent ver. of potato at home. I also have two NT
machines.  I want to setup my linux box as a intranet server and build a
web-based system on top of it using all free or almost free software.  It
should include a database (like oracle), a middle tier, like weblogic, and a
webserver (maybe more?).  Which packages should I use?

Does anyone have any recommendations?

I really just want to build a cool system at home.

Thanks in advance,
Tim