• Cuil
  "Cuil searches for and ranks pages based on their content and relevance. When we find a page with your keywords, we stay on that page and analyze the rest of its content, its concepts, their inter-relationships and the page’s coherency."
  in Public bookmarks with search web by 31 users
• del.icio.us tag search {trainque.com}
  in Public bookmarks with search tags by 2 users
• Gataga
  in Public bookmarks with search tags
• Google Help : Search Features
  in Public bookmarks with google reference search tips by 12 users
• How search engines rate on privacy - CNET News.com
  News.com asks Google, Yahoo and others to fess up on what they do to protect their users' personal information.In their own words: Search engines on privacy
  in Public bookmarks with search
• Koders - Source Code Search Engine
  
  Search more than 3.3b lines of open source code from the world�s leading open source repositories. Plugins available for Eclipse and Visual Studio.
  code open search source
  in Public bookmarks with programming reference search by 43 users
• Neuroscience Information Framework
  "This is the advanced search which uses the BIRNLex and the BIRN Data Integration Environment web services."
  in Public bookmarks with bioinformatics birn ndar ontology search
• q--ple
  "This site is a front end for the NCBI's PubMed service. You can search PubMed through the google like interface. "
  in Public bookmarks with bioinformatics literature search
• R Site Search Extension for Firefox
  "It allows to search in a growing collection of R packages from CRAN, BioConductor and other repositories (see here for a list of packages). "
  in Public bookmarks with firefox r search

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