Web | Documents
Second most popular search engine in the United States developed by Microsoft.
Preeminent search engine indexing billions of pages.
www.google.com | Also: Google ScholarYahoo!
Widely used search engine powered by Bing.
meta search enginesCarrot2
Open source meta search, clustering, and search visualization engine.
Clustering and meta search engine by Vantage Research.
Meta search and semantic clustering engine by Vivisimo.