List of search engines 2

By information type

Search engines dedicated to a specific kind of information

Forum

• Omgili

Blog

• Amatomu
• Bloglines
• BlogScope
• IceRocket
• Regator
• Technorati

Multimedia

See also: Multimedia search

• Bing Videos
• blinkx
• FindSounds
• Google Video
• Munax's PlayAudioVideo
• Picsearch
• Pixsta
• Podscope
• ScienceStage
• SeeqPod
• Songza
• TinEye
• TV Genius
• Veveo
• Yahoo! Video
• YouTube

Source code

• Google Code Search
• JExamples
• Koders
• Krugle

BitTorrent

These search engines work across the BitTorrent protocol.

• FlixFlux
• Isohunt
• Mininova
• The Pirate Bay
• TorrentSpy
• Torrentz

Cloud

Search engines listed below find various types of files that have been stored in the cloud and made publicly available.

• Open Drive

Email

• Lookeen
• TEK

Maps

• Bing Maps
• Géoportail
• Google Maps
• MapQuest
• Nokia_Maps
• OpenStreetMap
• WikiMapia
• Yahoo! Maps

Price

• Bing Shopping
• Google Shopping (formerly Google Product Search and Froogle)
• Kelkoo
• MySimon
• PriceGrabber
• PriceRunner
• PriceSCAN
• Pronto.com
• Shopping.com
• ShopWiki
• Shopzilla (also operates Bizrate)
• SwoopThat.com
• TheFind.com
• Wishabi

Question and answer

Human answers

• Answers.com
• Ask Me Help Desk
• DeeperWeb
• eHow
• Quora
• Stack Overflow/Stack Exchange Network
• Uclue
• wikiHow
• Yahoo! Answers

Automatic answers

See also: Question answering

• AskMeNow
• BrainBoost
• True Knowledge
• Wolfram Alpha

Natural language

See also: Natural language search engine and Semantic search

• Ask.com
• Bing (Semantic ability is powered by Powerset)
• hakia
• Lexxe

By model

Privacy search engines

• DuckDuckGo
• Ixquick (and startpage.com)

Open source search engines

• DataparkSearch
• Gigablast
• Grub
• ht://Dig
• Isearch
• Lemur Toolkit & Indri Search Engine
• Lucene
• mnoGoSearch
• Namazu
• Nutch
• Recoll
• Sciencenet (for scientific knowledge, based on YaCy technology)
• Searchdaimon
• Seeks
• Sphinx
• SWISH-E
• Terrier Search Engine
• Xapian
• YaCy
• Zettair

Semantic browsing engines

• Hakia
• Yebol

Social search engines

See also: Social search, Relevance feedback, and Human search engine

• ChaCha Search
• Delver
• Eurekster
• Mahalo.com
• OneRiot
• Rollyo
• SearchTeam
• Sproose
• Trexy
• Wink provides web search by analyzing user contributions such as bookmarks and feedback

Visual search engines

See also: Visual search engine

• ChunkIt!
• Grokker
• Pixsta
• PubGene
• TinEye
• Viewzi
• Macroglossa

Search appliances

See also: Search appliance

• Google Search Appliance
• Fabasoft
• Searchdaimon
• Thunderstone

Usenet

• Google Groups (formerly Deja News)

Based on

Google

• AOL Search
• CompuServe Search
• Groovle
• MySpace Search
• Netscape
• Ripple

Yahoo!

• Ecocho
• Everyclick (formerly based on Ask.com)
• Forestle (an ecologically motivated site supporting sustainable rain forests - formerly based on Google)
• GoodSearch
• Rectifi

Bing

• A9.com
• Alexa Internet
• Ciao!
• Facebook
• Ms. Dewey
• Yahoo! Search

Ask.com

• Hakia (semantic search)
• iWon
• Lycos
• Teoma

Defunct or acquired search engines

• AlltheWeb
• AltaVista (acquired by Yahoo! in 2003, shut down in 2013)
• Brainboost (Public engine no longer exists, acquired by Answers, Inc.)
• BRS/Search (now OpenText Livelink ECM Discovery Server)
• Btjunkie
• Cuil
• ChunkIt! (now "yolink!") (Public engine no longer exists)
• Direct Hit Technologies (acquired by Ask Jeeves in January, 2000)
• Google Answers
• IBM STAIRS
• Infoseek
• Inktomi
• Kartoo
• LeapFish (Public engine no longer exists)
• Lotus Magellan
• MetaLib (Public engine no longer exists)
• mozDex (No longer exists)
• Myriad Search (No longer exists)
• Overture.com (formerly GoTo.com, now Yahoo! Search Marketing)
• PubSub
• RetrievalWare (acquired by Fast Search & Transfer and now owned by Microsoft)
• Scroogle (Google Scraper)
• Singingfish
• Speechbot
• Sphere
• Tafiti
• Yebol
• Wikia Search (defunct)
• WiseNut
• World Wide Web Worm