FreshStatus - Better status pages in 1-click, FREE FOREVER
Dozuki - Dozuki is a web-based tool for creating and distributing step-by-step documentation.
statuspage - A simple self-hosted status page site with an API written in Django under the BSD license.
Bloomfire - Let Bloomfire help you get organized! Organize your content, build your company knowledge base and help your employees to be more successful.
Avaya one-X Agent - Other Customer Service
REWO - REWO is a knowledge documentation and distribution solution, which drastically improves capturing, visualizing and communicating knowledge.