my team and I have been struggling since day 1 with keeping information all in one place and formatting it in such a way that it would be accessible to every developer and the important parts were immediately obvious. We started with a shared OneNote notebook hosted on SkyDrive, and that's been somewhat painful so far (especially given having to pay for Office), even though I realize it can be made to work.
What we really need is some sort of team dashboard where all of the team's progress is visibly shown, questions are asked, deadlines are made clear and links to guides are placed (stuff like "Start here if you're new to the project"). We're considering moving to Evernote simply because it's free and available on all platforms, but that's still a very OneNote-like experience.
I wonder if we wouldn't benefit from a real wiki.. We're all GitHub users and thus perhaps we should use their embedded wiki, but I'm somewhat concerned with having all of our knowledge stuck there with possibly no way of easily pulling it out. Also mediawiki is cool, but it'd have to be hosted somewhere and its setup is manpower we might not have at this stage.
What would you recommend? What has worked great for your teams?