| Vivisimo Clustering Engine: Their document clustering and meta-search software automatically categorizes search results on-the-fly into hierarchical clusters. |
| Carrot2: A search results clustering framework. Includes clustering components and a stand-alone meta search component. |
| 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 Mac OSX.] |
| Grokker Web Clustering: Grokker clusters Google's results and local files. It uses an interface which visualizes clusters by means of circles. |
| MetaCrawler/HuskySearch/Grouper: Grouper partitioned the results into clusters, or groupings of URLs which contain similar content. |
| Mooter: |
| Northern Light: |
| 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. |
| SnakeT: A metasearch clustering engine for Web, Books, News. |
Classical
