Searcher is an experimental information retrieval system developed at SICS, and currently supports Boolean, Vector Space and structured queries. The document ranking function is a classical combination of term frequency (the importance of a term in a document) and the inverse document frequency (the importance of a term in the collection).

Searcher is publicly released under the MIT license, and the latest version can be retrieved from SICS at http://www.sics.se/humle/socialcomputing/download/

More information on the DUMAS project can be found at:
http://www.sics.se/dumas/