[Discover] CiteSeerX http://citeseerx.ist.psu.edu/ (research reference science searchengine)
 [Discover] SkreemR Mp3 Search - World's Greatest Mp3 Search Engine http://skreemr.com/ (music search searchengine download)
 [Discover] Blinkx http://www.blinkx.com/ (video search searchengine videos)
 [Discover] Sputtr. http://sputtr.com/ (search tools mashup google)
 [Discover] Healia - health search engine http://www.healia.com/healia/en/index.jsp? (health search medicine searchengine)
 [Discover] Scirus - for scientific information http://www.scirus.com/ (research science reference search)
 [Discover] The Anatomy of a Search Engine http://infolab.stanford.edu/~backrub/google.html (google search architecture engine)
 [Discover] search engines http://www.readwriteweb.com/archives/top_100_alternative_search_engines_feb07.php (search reference searchengine engine)
 [Discover] delizzy - del.icio.us Bookmarks Search Engine http://www.delizzy.com/ (delicious tools search resources)
 [Discover] Sphinx - Free open-source SQL full-text search engine http://www.sphinxsearch.com/ (search mysql database sql)
 [Discover] Hadoop framework http://wiki.apache.org/lucene-hadoop/FrontPage (apache hadoop scalability maenad)
 [Discover] Discover From Your Favorite Topic or Web Page http://www.megite.com/discover/ (search searchengine)
 [Discover] Yahoo! http://www.yahoo.com/ (search news yahoo searchengine)
 [Discover] AltaVista http://www.altavista.com/ (search searchengine searchengines engine)
 [Discover] Yahoo Search http://search.yahoo.com/ (search yahoo reference tool)
 [Discover] Lifehacker Top 10: Top 10 Obscure Google Search Tricks http://lifehacker.com/339474/top-10-obscure-google-search-tricks (google search tips productivity)
 [Discover] Lycos http://www.lycos.com/ (search searchengines searchengine news)
 [Discover] Add your URL to Google http://www.google.com/addurl/ (google url business seo)
 [Discover] A9.com - Innovations in Search Technologies http://a9.com/ (search tools shopping reference)

 [Discover] Yahoo!'s Web Crawler http://help.yahoo.com/l/us/yahoo/search/webcrawler/index.html (search crawler seo slurp)