Web search engine
A search engine is a software system that provides hyperlinks to web pages, and other relevant information on World Wide Web, the Web in response to a user's web query, query. The user enters a query in a web browser or a mobile app, and the sea ...
s are listed in tables below for comparison purposes. The first table lists the company behind the engine, volume and ad support and identifies the nature of the software being used as
free software
Free software, libre software, libreware sometimes known as freedom-respecting software is computer software distributed open-source license, under terms that allow users to run the software for any purpose as well as to study, change, distribut ...
or
proprietary software
Proprietary software is computer software, software that grants its creator, publisher, or other rightsholder or rightsholder partner a legal monopoly by modern copyright and intellectual property law to exclude the recipient from freely sharing t ...
. The second and third table lists
internet privacy
Internet privacy involves the right or mandate of personal privacy concerning the storage, re-purposing, provision to third parties, and display of information pertaining to oneself via the Internet. Internet privacy is a subset of data privacy. P ...
aspects along with other technical parameters, such as whether the engine provides personalization (alternatively viewed as a
filter bubble
A filter bubble or ideological frame is a state of intellectual isolationTechnopediaDefinition – What does Filter Bubble mean?, Retrieved October 10, 2017, "....A filter bubble is the intellectual isolation, that can occur when websites make ...
).
Defunct or acquired search engines are not listed here.
Search crawlers
Current search engines with independent
crawlers, as of December 2018.
Digital rights
Tracking and surveillance
See also
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Comparison of webmail providers
The following tables compare general and technical information for a number of notable webmail providers who offer a web interface in English.
The list does not include web hosting providers who may offer email server and/or client software as ...
– often merged with web search engines by companies that host both services
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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 ...
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Search engine privacy
References
{{Web search engines navbox
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Web search engines
Network software comparisons