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.
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By content/topic
General
{| class="wikitable sortable"
|-
! Name !! Language
!Backend ownership
|-
|Ask.com (defunct) || Multilingual
|-
|Baidu|| Chinese
|Baidu
|-
|Brave Search || Multilingual
|Brave
|-
|Dogpile|| English
|Metasearch engine
|-
|DuckDuckGo|| Multilingual
|Multiple
|-
|Ecosia|| Multilingual
|Google and Microsoft Bing
|-
|Elasticsearch|| Multilingual||Elasticsearch
|-
|Exalead|| Multilingual
|Cloudview
|-
|Excite†||Multilingual
|Microsoft Bing
|-
|Google|| Multilingual
|-
|HotBot|| English
|Microsoft Bing
|-
|Kagi||English
|Metasearch engine and Kagi
|-
|Lycos|| Multilingual
|Microsoft Bing
|-
|MetaCrawler|| English
|Metasearch engine
|-
|Microsoft Bing|| Multilingual
|Microsoft Bing
|-
|Mojeek|| Multilingual
|Mojeek
|-
|Opensearch|| Multilingual ||
|-
|Petal|| Multilingual
|Huawei
|-
|Presearch|| Multilingual
|Presearch
|-
|Qwant|| Multilingual
|Microsoft Bing
|-
|SearXNG|| Multilingual
|Metasearch engine
|-
|Sogou|| Multilingual
|Tencent
|-
|Startpage|| English
|-
|Swisscows|| Multilingual
|Microsoft Bing
|-
|WebCrawler|| English
|Microsoft Bing
|-
|YaCy|| Multilingual ||
|-
|Yahoo! Search†|| Multilingual
|Microsoft Bing
|-
|Yandex|| Multilingual
|Yandex
|-
|Yep
|English
|Yep
|-
|Youdao†|| Chinese
|NetEase
|-
|You.com || English
|Microsoft Bing
|}
{| class="wikitable"
| <nowiki>†</nowiki> Main website is a portal
|-
|
|}
Geographically localized
{| class="wikitable sortable"
|-
! Name !! Language !! Country
|-
| Accoona || Chinese, English || China, United States
|-
| BIGLOBE || Japanese || Japan
|-
| Daum|| Korean
|| Korea
|-
| Nate || Korean
|| Korea
|-
| Egerin || Kurdish|| Sweden
|-
| Fireball || German, English || Germany
|-
| Goo || Japanese || Japan
|-
| Leit.is ||Icelandic, English || Iceland
|-
| Najdi.si || Slovenian|| Slovenia
|-
| Naver || Korean || Korea
|-
| Parsijoo (defunct) || Persian || Iran
|-
| Pipilika (defunct) || Bengali, English || Bangladesh
|-
| Rambler || Russian || Russia
|-
| Rediff || || India
|-
| SAPO || Portuguese || Portugal
|-
| Search.ch || || Switzerland
|-
| Sesam (defunct) || || Norway, Sweden
|-
| Seznam || Czech || Czech Republic
|-
| Walla! || || Israel
|-
| Yahoo Japan || Japanese || Japan (Google backend)
|-
| Yongzin || Tibetan || China
|-
| ZipLocal || English || Canada, United States
|}
Business
- Business.com
- Daily Stocks
- GenieKnows (United States and Canada)
- GlobalSpec
- Nexis (Lexis Nexis)
- Thomasnet (United States)
- Justdial (India)
Computers
- Shodan (website)
Content
- Openverse, search engine for open content.
Dark web
- Ahmia
Education
General:
- Chegg
Academic materials only:
- BASE (search engine)
- 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
- Zoho
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)
- Yahoo! HotJobs (Country-wise subdomains, International)
Legal
- Google Patents
- 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
- Dailyhunt (India)
- Priyo
- Yahoo! News
People
- Whitepages
- 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
Datasets
- Google Dataset Search
Maps
- Baidu Maps
- Bing Maps
- Géoportail
- Google Maps
- MapQuest
- Nokia Maps
- OpenStreetMap
- Petal Maps
- Qwant Maps (defunct)
- Tencent Maps
- Wikiloc
- WikiMapia
- Yahoo! Maps
- Yandex Maps
- MapmyIndia
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
- Marginalia
- Mojeek (substack only)
- Munax
- Regator
- Technorati
By model
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.
{|class="wikitable sortable" style="text-align=left;"
! Name
! Platform
! Remarks
! License
|-
! HP Autonomy
| Windows
| IDOL Enterprise Desktop Search, HP Autonomy Universal Search.
|
|-
! Copernic Desktop Search
| Windows
|Major desktop search program. The full trial version downgrades after the trial period automatically to the free version, which is (anno 2018) limited to indexing a maximum of 10.000 files.
<!-- Can we remove this? It is not a relevant "remark" and the cited study is no longer available. See Talk:Desktop search#The article does not educate the reader and needs to be rewritten
Considered best overall search engine in 2005 UW benchmark study.
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|
|-
! DocFetcher
| Cross-platform
| Open-source desktop search tool for Windows and Linux, based on Apache Lucene
|
|-
! dtSearch Desktop
| Windows
|
|
|-
! Everything
| Windows
| Find files and folders by name instantly on NTFS volumes
|
|-
!Found
|macOS
|Searches for files stored locally, and the cloud and inbox and, is summoned with a double-tap of the ctrl key. Program now discontinued.
|Free, proprietary
|-
! | GNOME Storage
| Linux
| Open-source desktop search tool for Unix/Linux
|
|-
! | Google Desktop
| Linux, macOS, Windows
| Integrates with main Google search engine page; discontinued by Google September 14, 2011
|
|-
! ISYS Search Software
| Windows
| ISYS:Desktop search software
|
|-
!KRunner
|Linux
|
|
|-
! | Locate32
| Windows
| Graphical port of Unix's locate & updatedb
|
|-
! | Lookeen
| Windows
| Desktop search product with Outlook plugin and limited support for other formats via IFilters, uses Lucene search engine.
|
|-
! Nepomuk
| Linux
| Open-source semantic desktop search tool for Linux. Has been replaced by Baloo in KDE Applications from release 4.13 onward.
| Mix of SA 3.0 and GNU Free Documentation v1.2
|-
! Recoll
| Linux, Unix, Windows, macOS
| Open-source desktop search tool for Unix/Linux
|
|-
! Spotlight
| macOS
| Found in Apple macOS "Tiger" and later OS X releases.
|
|-
! | Strigi
| Linux, Unix, Solaris, macOS, Windows
| Cross-platform open-source desktop search engine. Unmaintained since 2011-06-02.
|
|-
! Terrier Search Engine
| Linux, macOS, Unix
| Desktop search for Windows, Mac OS X Tiger, Unix/Linux.
|
|-
! Tracker
| Linux, Unix
| Open-source desktop search tool for Unix/Linux
|
|-
! | Tropes Zoom
| Windows
| Semantic Search Engine (no longer available)
|
|-
! Unity Dash
| Linux
| Was part of Ubuntu Desktop
|
