I’ve just come across MindTouch’s Deki which aims to evolve wikis to the next level. Although I haven’t had chance to install it yet – it’s only free for up to 5 users and then prohibitively expensive – Deki looks like it could be the next wiki paradigm. You can see it in action at OpenGarden, a Mindtouch-sponsored Open Source community. The main feature of Deki is its semantic web possibilities. There’s a review of Deki over at Read/Write Web if you’re interested in more details. Personally, I can’t wait for this type of web app to filter down to the free level so I can use it with my students!
Update: I’ve discovered that Deki is actually Open Source, but that it’s an ‘OSI-approved commercially supported open source wiki’. This means that the source code is available, but to use it as-is, you have to buy it. Fear not, as Mindtouch’s Wik.is site will allow you to create a free wiki with a version of Deki that is a couple of releases old!