So, browsing through these projects I see a lot of crawlers. Where is the search tech? Other than that one project which seems to be a JS-frontend for Lucene/S

So, browsing through these projects I see a lot of crawlers. Where is the search tech? Other than that one project which seems to be a JS-frontend for Lucene/Solr, I can't find anything having to do with Information Retrieval. Unless I'm missing something, the article and the previous one it links to seem to be a bit overblown. "Could The U.S. Military's New Search Engine Replace Google?" -> Not if the U.S. Military's New Search Engine is the vanilla Lucene/Solr. Link: http://www.darpa.mil/opencatalog/MEMEX.html http://www.darpa.mil/opencatalog/MEMEX.html