Our support team asked me to setup a Knowledge Base for internal use.

The Knowledge Base should have the following features:

Lightweight

Web based

Searchable

Ability to add attachments (screenshots, patches, etc) to the entries

Preferably running on a database backend

low cost

Preferably written in perl (that's my point :) )

I've searched on freshmeat, sourceforge and google and found several solutions.

Still I didn't found something that suits our needs.

What I found so far was either:

too complicated (Complete helpdesk solution)

in a too early development status

simply not looking serious. (Good developers aren't always good designers :) )

Maybe I didn't look well or maybe can what I want be accomplished with a simple forum ?

I can start writing something myself, but I'm sure there must be something already available Open Source.

Any comments / tips are highly appreciated !