One information visualization tool that's received plenty of attention over the past few years is Groxis from Grokker. Today, the NY Times reports that you can now use Groxis to visualize Yahoo Search results for free and WITHOUT having to download...
Matt at the Merc reports about the latest goings on at info visualization tool Groxis in the article: Groxis moves up in the world. I used Groxis for several weeks year and didn't find it all that useful but that could just be me and the way I search.
Grokker http://www.groxis.com/service/grok/g_products.html Search Tool & Utility Reviews Within Search Engine Watch, this page has older reviews of software-based search tools that you may find interesting.
