After completing the Wetpaint wiki tool, I decided no to do a 4th. Reasons for this being largely time constraints but also because a 4th tool will not affect the results of my study in anyway. It would have been nice to have picked a tool that covered some of the design patterns that the others did not, such as one with full synchronous editing support, but it's difficult to find such tools that are free and of reasonable quality. In hind-sight I should not have used so many design patterns (54). Had I picked only 10 common ones, I would have had time to cover 6 tools, but as mentioned, I don't believe the results will be significantly affected.
Efforts now are focused on final write-up with the intention of handing my paper in on Friday. Have a couple of important things on at work this week but will push hard to meet the deadline.
Looking forward to having it finished.