It depends on what you're using a KB for. I've had superb experiences with using TWiki. Both for storing project documentation and managing structured data usi

It depends on what you're using a KB for. I've had superb experiences with using TWiki. Both for storing project documentation and managing structured data using its forms and reporting features. Has real easy wysiwyg editor and a familiar wiki interface. http://twiki.org/ http://twiki.org/ Oh yeah, and it's free and open source.