Thursday, November 1, 2018

Local search and indexers, desktop search tools




Desktop search tools


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Desktop search engines listed on a light purple background are no longer in active development.
NamePlatformRemarksLicense
DocFetcherCross-platformOpen source desktop search tool for Windows and Linux, based on Apache LuceneEclipse Public License
BeagleLinuxOpen source desktop search tool for Linux based on Lucene. Unmaintained since 2009.A mix of the X11/MIT License and the Apache License
GNOME StorageLinuxOpen Source desktop search tool for Unix/LinuxGPL
NepomukLinuxOpen Source semantic desktop search tool for Linux. Has been replaced by Balooin KDE Applications from release 4.13 onward.License SA 3.0 and the GNU Free Documentation License 1.2
Unity DashLinuxPart of Ubuntu Desktop.GPL v3[11], LGPL v2.1[12]
Terrier Search EngineLinuxMac OS XUnixDesktop search for Windows, Mac OS X (Tiger), Unix/Linux.MPL v1.1[9]
Google DesktopLinuxMac OS XWindowsIntegrates with the main Google search engine page. 5.9 Release now supports x64 systems. As of September 14, 2011, Google has discontinued this product.Freeware
TrackerLinuxUnixOpen Source desktop search tool for Unix/LinuxGPL v2 [6]
StrigiLinuxUnixSolarisMac OS Xand WindowsCross-platform open source desktop search engineLGPL v2 [8]
RecollLinuxUnixWindowsmacOSOpen Source desktop search tool for Unix/LinuxGPL [7]
SpotlightmacOSFound in Apple Mac OS X "Tiger" and later OS X releases.Proprietary
AutonomyWindowsIDOL Enterprise Desktop Search, HP Autonomy Universal Search.[3]Proprietary, commercial
Copernic Desktop SearchWindowsMajor 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)
dtSearch DesktopWindowsProprietary (30 day trial)
EverythingWindowsFind files and folders by name instantly on NTFS volumesFreeware
ISYS Search SoftwareWindowsISYS:desktop search software.Proprietary (14-day trial)
Locate32WindowsGraphical port of Unix's locate & updatedbBSD License[4]
LookeenWindowsMajor Microsoft Windows search product.Proprietary (14-day trial)[5]
Tropes ZoomWindowsSemantic Search Engine (no longer available).[10]Freeware and commercial
Windows SearchWindowsPart 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 SearchWindowsMajor desktop search product along with Copernic Desktop Search.Proprietary (14-day trial)[13



Desktop search tools search within a user's own computer files as opposed to searching the Internet. These tools are designed to find information on the user's PC, including web browser history, e-mail archives, text documents, sound files, images, and video. A variety of desktop search programs are now available; see this listfor examples. Most desktop search programs are standalone applications. Desktop search products are software alternatives to the search software included in the operating system, helping users sift through desktop files, emails, attachments, and more.[1][2][3]
Desktop search emerged as a concern for large firms for two main reasons: untapped productivity and security. According to analyst firm Gartner, up to 80% of some companies' data is locked up inside unstructured data — the information stored on an user's PC, the directories (folders) and files they've created on a network, documents stored in repositories such as corporate intranets and a multitude of other locations.[4] Moreover, many companies have structured or unstructured information stored in older file formats to which they don't have ready access.
Historically, full desktop search comes from the work of Apple Computer's Advanced Technology Group, resulting in the underlying AppleSearchtechnology in the early 1990s. It was used to build the Sherlock search engine and then developed into Spotlight, which brought automated, non-timer-based full indexing into the operating system





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