Yioop softwareprovides manyof the samefeatures oflarger searchportals: Search Results.Yioop comeswith a crawlerthat can beused to crawlthe open web ora selection ofURLs of yourchoice. It canindex populararchive formatslike WikipediaXML-dumps, arc,warc, OpenDirectoryProject-RDF(nowCurlie.org), aswell as dumpsof emails ordatabases. Onceyou havecreated Yioopindexes of yourdesired datasources, Yioopcan serve as asearch enginefor your data.It supports"crawl mix