We are using Jive for all of our internal documentation which works really well for us. For deep documentation, both new document requests and document updates

We are using Jive for all of our internal documentation which works really well for us. For deep documentation, both new document requests and document updates are submitted using a built-in "Ideas" feature. "Ideas" can include plain text, links, images, or videos, and can be submitted by anyone in the company. With this information, we can create a new document, save it in Jive, and then respond to the "Idea" with a "The document is done and here's the link to it" comment. For quick fire Q&A, we've created a page in Jive that uses built-in "Questions" and "Answers" features, again, accessible to anyone in the company. Jive's search feature is pretty robust (keyword-indexes anything you add to it without having to create tags, though you can add tags if you want).