360view4u
   Searches RSS feeds: news articles, press releases, news archives, and blogs, using the Google XML service.
   http://www.360view4u.co.uk

Creative Commons Search
   Powered by Nutch, it searches for content which can be re-used (for some uses) without having to pay or ask permission.
   http://search.creativecommons.org/

SearchIRC
   Search Internet Relay Chat rooms and networks.
   http://searchirc.com/

Thagoo
   Searches millions of user's categorized favorite links using the most popular social bookmark sites, using classification by tags.
   http://thagoo.com

ZoomInfo
   A business information search engine, providing company search, people search and job search. It constructs profiles on people and companies, drawn from the Web, or created by individuals and companies for themselves.
   http://www.zoominfo.com/