Vivisimo Clustering Engine
- Their document clustering and meta-search software automatically categorizes search results on-the-fly into hierarchical clusters.
- http://vivisimo.com/
Grokker Web Clustering - Grokker clusters Google's results and local files. It uses an interface which visualizes clusters by means of circles. - http://www.grokker.com
SnakeT - A metasearch clustering engine for Web, Books, News. - http://snaket.di.unipi.it/
Dowser - 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 - http://dowser.sourceforge.net/
MetaCrawler/HuskySearch/Grouper - Grouper partitioned the results into clusters, or groupings of URLs which contain similar content. - http://www.cs.washington.edu/research/projects/WebWare1/www/metacrawler/
Carrot2 - A search results clustering framework. Includes clustering components and a stand-alone meta search component. - http://sourceforge.net/projects/carrot2/
Query Server Web Search - The Query Server Web search page queries eight general purpose Web search engines, and returns a single merged, ranked and conceptually clustered list. - http://www.queryserver.com/web.htm