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DuckDuckGo was founded by Gabriel Weinberg and launched on February 29, 2008, in Valley Forge, Pennsylvania. [ 2][ 13] Weinberg is an entrepreneur who previously launched Names Database, a now-defunct social network. Self-funded by Weinberg until October 2011, DuckDuckGo was then "backed by Union Square Ventures and a handful of angel investors ."
List of academic databases and search engines. This article contains a representative list of notable databases and search engines useful in an academic setting for finding and accessing articles in academic journals, institutional repositories, archives, or other collections of scientific and other articles. Databases and search engines differ ...
Web search engines 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 or proprietary software. The second and third table lists internet privacy aspects along with other technical parameters, such as ...
Windows. IDOL Enterprise Desktop Search, HP Autonomy Universal Search. [ 5] 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.
Search engine (computing) In computing, a search engine is an information retrieval software system designed to help find information stored on one or more computer systems. Search engines discover, crawl, transform, and store information for retrieval and presentation in response to user queries. The search results are usually presented in a ...
There is considerable use of search engines for "people-searching", attempting to find information on persons by performing a search of their name. [85] A number of high-profile commentators have publicly criticized Google's policies, including technologists Jamie Zawinski , [86] Kevin Marks , [87] and Robert Scoble [88] and organizations such ...
The collection of user data by search engines can be viewed as a positive practice because it allows the search engine to personalize results. This implies that users would receive more relevant results, and be shown more relevant advertisements, when their data, such as past search queries, location information, and clicks, is used to create a ...
Metasearch engine. A metasearch engine (or search aggregator) is an online information retrieval tool that uses the data of a web search engine to produce its own results. [ 1][ 2] Metasearch engines take input from a user and immediately query search engines [ 3] for results. Sufficient data is gathered, ranked, and presented to the users.