- Vivisimo Clustering Engine - http://vivisimo.com/
Their document clustering and meta-search software automatically categorizes search results on-the-fly into hierarchical clusters.
- Mooter - http://www.mooter.com/
- Query Server Web Search - http://www.queryserver.com/web.htm
The Query Server Web search page queries eight general purpose Web search engines, and returns a single merged, ranked and conceptually clustered list.
- Carrot2 - http://sourceforge.net/projects/carrot2/
A search results clustering framework. Includes clustering components and a stand-alone meta search component.
- MetaCrawler/HuskySearch/Grouper - http://www.cs.washington.edu/research/projects/WebWare1/www/metacrawler/
Grouper partitioned the results into clusters, or groupings of URLs which contain similar content.
- Grokker Web Clustering - http://www.groxis.com/
Grokker clusters Google's results and local files. It uses an interface which visualizes clusters by means of circles.
- Dowser - http://dowser.sourceforge.net/
Clusters results from major search engines, associates words that appear in previous searches, and keeps a local cache of all the results you click on in a searchable database. It helps keep track of what you find on the web. [Windows, UNIX, Linux and Mac OSX.]
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