# 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.

## By content/topic
### General

| Name | Language | Backend ownership |
| Ask.com | Multilingual | Google |
| Baidu | Chinese | Baidu |
| Brave Search | Multilingual | Brave |
| Dogpile | English | Metasearch engine |
| DuckDuckGo | Multilingual | Multiple, including Microsoft Bing |
| Ecosia | Multilingual | Google and Microsoft Bing |
| Elasticsearch | Multilingual | Apache 2.0 until 2021, then Elasticsearch |
| Exalead | Multilingual | Cloudview |
| Excite† | Multilingual | Microsoft Bing |
| Gigablast | English | Apache License 2.0 |
| Google | Multilingual | Google |
| HotBot | English | Microsoft Bing |
| Kagi | English | Metasearch engine and Kagi Inc |
| Lycos | Multilingual | Microsoft Bing |
| MetaCrawler | English | Metasearch engine |
| Microsoft Bing | Multilingual | Microsoft Bing |
| Mojeek | Multilingual | Mojeek |
| Opensearch | Multilingual | Apache License 2.0 (Elasticsearch fork) |
| Petal | Multilingual | Huawei |
| Qwant | Multilingual | Microsoft Bing |
| Searx | Multilingual | Metasearch engine |
| Sogou | Multilingual | Tencent |
| Startpage | English | Google |
| Swisscows | Multilingual | Microsoft Bing |
| WebCrawler | English | Microsoft Bing |
| YaCy | Multilingual | GPL-2.0-or-later |
| Yahoo! Search† | Multilingual | Microsoft Bing |
| Yandex | Multilingual | Yandex |
| Youdao† | Chinese | NetEase |
| You.com | English | Microsoft Bing |
† Main website is a portal

### Geographically localized

| 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 | Persian | Iran |
| Pipilika (defunct) | Bengali, English | Bangladesh |
| Rambler | Russian | Russia |
| Rediff | | India |
| 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 |

### 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

### 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

### 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 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
* 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
* 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

## 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.
| Name | Platform | Remarks | License |
| HP Autonomy | Windows | IDOL Enterprise Desktop Search, HP Autonomy Universal Search. | Proprietary, commercial |
| Beagle | Linux | Open-source desktop search tool for Linux based on Lucene. Unmaintained since 2009. | A mix of the X11/MIT License and the Apache License |
| 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. | Proprietary (30 day trial) |
| DocFetcher | Cross-platform | Open-source desktop search tool for Windows and Linux, based on Apache Lucene | Eclipse Public License |
| dtSearch Desktop | Windows | | Proprietary (30 day trial) |
| Everything | Windows | Find files and folders by name instantly on NTFS volumes | Freeware |
| 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 | GPL |
| Google Desktop | Linux, Mac OS X, Windows | Integrates with the main Google search engine page. As of September 14, 2011, Google has discontinued this product. | Freeware |
| ISYS Search Software | Windows | ISYS:Desktop search software. | Proprietary (14-day trial) |
| KRunner | Linux | | |
| Locate32 | Windows | Graphical port of Unix's locate & updatedb | BSD License |
| Lookeen | Windows | Desktop search product with Outlook plugin and limited support for other formats via IFilters, uses Lucene search engine. | Proprietary (14-day trial) |
| Nepomuk | Linux | Open-source semantic desktop search tool for Linux. Has been replaced by Baloo in KDE Applications from release 4.13 onward. | License SA 3.0 and the GNU Free Documentation License 1.2 |
| Recoll | Linux, Unix, Windows, macOS | Open-source desktop search tool for Unix/Linux | GPL |
| Spotlight | macOS | Found in Apple Mac OS X "Tiger" and later OS X releases. | Proprietary |
| Strigi | Linux, Unix, Solaris, Mac OS X and Windows | Cross-platform open-source desktop search engine. Unmaintained since 2011-06-02. | LGPL v2 |
| Terrier Search Engine | Linux, Mac OS X, Unix | Desktop search for Windows, Mac OS X (Tiger), Unix/Linux. | MPL v1.1 |
| Tracker | Linux, Unix | Open-source desktop search tool for Unix/Linux | GPL v2 |
| Tropes Zoom | Windows | Semantic Search Engine (no longer available) | Freeware and commercial |
| Unity Dash | Linux | Part of Ubuntu Desktop | GPL v3, LGPL v2.1 |
| Windows Search | Windows | Part of Windows Vista and later OSs. Available as Windows Desktop Search for Windows XP and Server 2003. Does not support indexing UNC paths on x64 systems. | Proprietary |
| X1 Desktop Search | Windows | Major desktop search product along with Copernic Desktop Search | Proprietary (14-day trial) |
| Wumpus | Cross platform | Desktop search focused on information retrieval research | GPL |

### Child-safe search engines

* Kiddle
* KidRex
* KidzSearch
* QwantJunior
* Swisscows

### Metasearch engines

| Name | Language |
| Dogpile | English |
| Excite | English |
| Info.com | English |
| Kayak.com | Multilingual |
| Mamma.com | |
| MetaCrawler | English |
| MetaGer | Multilingual |
| Mobissimo | Multilingual |
| Otalo.com | English |
| Publisher's clearinghouse Search and Win | |
| Searx | Multilingual |
| SearXNG | Multilingual |
| Skyscanner | Multilingual |
| Wego.com | Multilingual |
| All In One | English |

### Natural language

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

### 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

### P2P search engines

| Name | Language |
| Seeks (open-source) | English |
| YaCy (free and fully decentralized) | Multilingual |

### Privacy search engines

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

### Social and environmental focus

* Ecosia

### Semantic browsing engines

| Name | Description | Speciality |
| Evi | Specialises in knowledge base and semantic search | answer engine |
| Swoogle | Searching over 10,000 ontologies | Semantic web documents |
| Yebol | defunct | defunct |
| Yummly | Semantic web search for food, cooking, and recipes | food related |

### 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

| Name | Backend ownership | Demise |
| iWon | Ask.com | Shut down after AT&T merger |
| Teoma | Ask.com | Merged to Ask.com which still uses its algorithms |
| A9.com | Microsoft Bing | Redirect to Amazon homepage (parent company) |
| AOL | Google until 2015, then Microsoft Bing | Merged to Yahoo! |
| Alexa Internet | Microsoft Bing | Bought by Amazon in 1999, shut down in 2021 |
| Ciao! | Microsoft Bing | Shut down in 2018 |
| Ms. Dewey | Microsoft Bing | January 2009 |
| Groovle | Google | Taken over by Google after Google sued for name similarity |
| MySpace Search | Google | Function taken over by Google in 2006 |
| Mystery Seeker | Google | Novelty "search"; went offline in 2017 |
| Netscape | Google | Now redirects to AOL |
| Ripple | Google | as of 2017 at the latest |
| Ecocho | Google, then Yahoo! | |
| Forestle | Google, then Yahoo! | Redirected to Ecosia in 2011 |
| Yippy | IBM Watson | Redirected to DuckDuckGo in 2021 |
| Grams | Grams (anonymous owner) | Closed in 2017 |
* 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