In the last few months of 2007 I talked with individuals from a number of tool providers that can be used to support Enterprise 2.0. I posted on each, either on my own Portals and KM blog or at the FastForward blog. Some are currently more consumer web focused at the moment but easily could be adapted to the enterprise. I want to share these with the AppGap audience as they are very relevant to what we are discussing here but are not part of our blog archive. Here is a listing with links to the relevant blog post.
iQuest integrates social network analysis with search (both term-less search and key word based).