List of search engines

Search engines, including web search engines, selection-based search engines, metasearch engines, desktop search tools, and web portals and vertical market websites have a search facility for online databases.

General
† Main website is a portal

Accountancy

 * IFACnet

Business

 * Business.com
 * Daily Stocks
 * GenieKnows (United States and Canada)
 * GlobalSpec
 * Nexis (Lexis Nexis)
 * Thomasnet (United States)

Computers

 * Shodan (website)

Content

 * Openverse, search engine for open content.

Dark web

 * Ahmia
 * DuckDuckGo
 * TorSearch

Education
General:
 * Chegg

Academic materials only:
 * BASE (search engine)
 * ChemRefer
 * CiteULike
 * Google Scholar
 * Internet Archive Scholar
 * Library of Congress
 * Semantic Scholar

Enterprise

 * Apache Solr
 * Jumper 2.0: Universal search powered by Enterprise bookmarking
 * Oracle Corporation: Secure Enterprise Search 10g
 * Q-Sensei: Q-Sensei Enterprise
 * Swiftype: Swiftype Search
 * TeraText: TeraText Suite

Events

 * Tickex (US, UK)
 * TickX (UK, Ireland, Spain, Netherlands)

Food and recipes

 * RecipeBridge: vertical search engine for recipes
 * Yummly: semantic recipe search

Genealogy

 * Mocavo.com: family history search engine

Job

 * Adzuna (UK)
 * CareerBuilder (US)
 * Craigslist (by city)
 * Dice.com (US)
 * Glassdoor (US)
 * Indeed (US)
 * JobStreet.com (Southeast Asia, Japan, India)
 * Monster.com (US), (India)
 * Naukri.com (India)
 * Rozee.pk (Pakistan)
 * Yahoo! HotJobs (Countrywise subdomains, International)

Legal

 * Google Scholar
 * Lexis (Lexis Nexis)
 * Quicklaw
 * WestLaw

Medical

 * Bing Health
 * Bioinformatic Harvester
 * CiteAb (antibody search engine for medical researchers)
 * EB-eye EMBL-EBI's Search engine
 * Entrez (includes PubMed)
 * GenieKnows
 * Healia
 * Healthline
 * Nextbio (Life Science Search Engine)
 * PubGene
 * Searchmedica
 * WebMD

Mobile/handheld

 * Taganode Local Search Engine (now defunct)
 * Taptu: taptu mobile/social search (now defunct)

News

 * Bing News
 * Google News
 * Priyo
 * Yahoo! News
 * Priyo
 * Yahoo! News

People

 * FindFace
 * PeekYou
 * Spokeo
 * Zabasearch.com
 * ZoomInfo

Real estate/property

 * HotPads.com
 * Realtor.com
 * Redfin
 * Rightmove
 * StuRents.com
 * Trulia
 * Zillow
 * Zoopla

Television

 * TV Genius

Travel

 * Bustripping

Video

 * Sepia Search

Video games

 * Wazap

By data type
Search engines dedicated to a specific kind of information

Maps

 * Baidu Maps
 * Bing Maps
 * Géoportail
 * Google Maps
 * MapQuest
 * Nokia Maps
 * OpenStreetMap
 * Petal Maps
 * Qwant Maps
 * Tencent Maps
 * Wikiloc
 * WikiMapia
 * Yahoo! Maps
 * Yandex Maps

Multimedia

 * Bing Videos
 * blinkx
 * FindSounds
 * Google Images
 * Google Video
 * Munax's PlayAudioVideo
 * Openverse, search engine for open content.
 * Picsearch
 * Podscope
 * SeeqPod
 * Sepia Search
 * Songza
 * Tencent Video
 * TinEye
 * TV Genius
 * Veveo
 * Yahoo! Video

Price

 * Bing Shopping
 * Google Shopping (formerly Google Product Search and Froogle )
 * Kelkoo
 * MySimon
 * PriceGrabber
 * PriceRunner
 * Pronto.com
 * Shopping.com
 * Shopzilla
 * TickX

Source code

 * Google Code Search
 * Koders
 * Krugle

BitTorrent
These search engines work across the BitTorrent protocol.
 * BTDigg
 * Isohunt - discontinued
 * Mininova - discontinued
 * The Pirate Bay
 * TorrentSpy - discontinued
 * Torrentz - discontinued

Blog

 * Amatomu
 * Bloglines
 * IceRocket
 * Mojeek (substack only)
 * Munax
 * Regator
 * Technorati

Search appliances

 * Fabasoft
 * Google Search Appliance - discontinued
 * Munax
 * Searchdaimon
 * Thunderstone

Desktop search engines
Desktop search engines listed on a light purple background are no longer in active development.

Child-safe search engines

 * Kiddle
 * KidRex
 * KidzSearch
 * QwantJunior
 * Swisscows

Natural language

 * Ask.com
 * Bing (Semantic ability is powered by Powerset)
 * Lexxe
 * Perplexity.ai

Open-source search engines

 * ht://Dig
 * Isearch
 * Lemur Toolkit & Indri Search Engine
 * Lucene
 * mnoGoSearch
 * Nutch
 * Openverse
 * Recoll
 * Searchdaimon
 * Searx
 * Seeks
 * Sphinx
 * SWISH-E
 * Terrier Search Engine
 * Xapian
 * YaCy
 * Zettair

Web search engine

 * Gigablast
 * Grub

Enterprise search

 * Apache Solr
 * Elasticsearch

Privacy search engines

 * DuckDuckGo
 * HotBot
 * MetaGer
 * Mojeek
 * Qwant
 * Searx
 * Startpage.com
 * Swisscows
 * You.com

Social and environmental focus

 * Ecosia

Social search engines

 * ChaCha Search
 * Delver
 * Eurekster
 * Facebook Search
 * Mahalo.com
 * Rollyo
 * Sproose
 * Trexy

Usenet

 * Google Groups (formerly Deja News)

Visual search engines

 * FindFace
 * Grokker
 * Macroglossa
 * TinEye
 * Viewzi

Defunct or acquired search engines

 * AlltheWeb (acquired by Yahoo!)
 * AltaVista (acquired by Yahoo! in 2003, shut down in 2013)
 * Bixee.com (India) (acquired by Ibibo)
 * Blekko (acquired by IBM in 2015 for its use for Watson-based products)
 * BlogScope (acquired by Marketwire)
 * BRS/Search (now OpenText Livelink ECM Discovery Server)
 * Btjunkie
 * Cuil (patents acquired by Google after shutdown)
 * DeepPeep
 * Direct Hit Technologies (acquired by Ask Jeeves in January, 2000)
 * Getit Infoservices Private Limited
 * Google Answers
 * GoPubMed
 * hakia
 * IBM STAIRS
 * Infoseek (acquired by Disney)
 * Inktomi
 * Ixquick (merged into Startpage)
 * Jubii
 * Kartoo
 * LeapFish
 * Lotus Magellan
 * MetaLib
 * mozDex
 * Munax
 * Myriad Search
 * 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 (acquired by AOL)
 * Soso
 * Speechbot
 * Sphere (acquired by AOL)
 * Startpage (acquired by System1, an advertising company)
 * Tafiti (replaced by Microsoft Bing)
 * Volunia
 * Wikia Search (defunct)
 * WiseNut
 * World Wide Web Worm