I am looking for help identifying quality software programs that will
essentially allow me to create and maintain a personal knowledge
database- where I can store information that I learn, or from web
pages, or MS Office documents etc.- keep them organized- and then
allows me to find the information quickly as needed.  I'm impressed
with the functions of Wikipedia, but wanted a list of other potential
software solutions.  My preference is workstation PC software, but am
willing to consider other solutions.

I'd like to use such a tool to create a personal knowledge database
for 1 person, and perhaps also for a small team of 5-6 people.  Thank
you.

MindManager is an excellent tool for organizing your personal
knowledge. www.mindjet.com. You may also want to look at
www.mindtools.com. Another products in the market for PKC are:
www.webforia.com which allows us to clip and capture web pages and
snippets. Other products are: www.thebrain.com (PersonalBrain) and
www.visimap.com (VisiMap).

Thanks Sam203-ga for your comments. Webforia sounds like a good tool
for the web page captures, however I could not find it online anywhere
to download.
Any ideas on what happened to this product - perhaps it became another product?