Try the Alt Search Engine of the Day: AllPlus (all+)
The AllPlus Universal Meta Search and Discovery Engine aims to identify and present the very best search results from the very best information sources on the Web, including Google, Yahoo, MSN Live and Ask.com; Web pages, News, Images, Videos and Blogs. The results are compared and ranked and presented to the user in an intuitive and organized way, similar to Kosmix’s topic overview pages.
They have also developed integrated Natural Language Processing algorithms in the query analysis and refinement, search strategy, relevancy ranking, focused drill-down and exploration of multi-dimensional information spaces. AllPlus also employs multiple spell checkers based on our comprehensive English, Medical and Scientific Dictionaries. The system dynamically generates Topic Clusters and visualizes the search results in the form of Cluster Graphs.
AllPlus.com is built on the PolyMeta meta search engine. They have been developing PolyMeta for about 5 years and AllPlus is a new way of presenting the results using the multidimensional approach. On the left side you can see their clusters like Vivisimo does, but in two different forms. The first one is a plain tree, and the other one is a hypertree version of the clusters (see below).
AllPlus works just like a regular search engine, so if you have never used it before, please give it a quick trial today and leave a comment here, or you can email them directly at info@allplus.com and mention AltSearchEngines.com! 
October 25th, 2007 at 8:28 pm
[…] Alt Search Engine blog highlighted an interesting new search engine today called All […]
October 25th, 2007 at 9:41 pm
I had a look at the AltPlus search engine.
The good news is that it clubs the documents from all.
I typed “Philosophy of Formal systems” and looked at the results.
The simple tree duplicates an article in two nodes. Not much help there.
Could n’t see the Hyper tree as it needs java virtual machine. Flash would be helpful on windows machines than JVM I guess.
Last but not the least clustering doesn’t seem to add much from a user’s need to see what he wants.