Strigi

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File indexing and file search framework

title: "Strigi" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["desktop-search-engines", "free-software-programmed-in-c++"] description: "File indexing and file search framework" topic_path: "general/desktop-search-engines" source: "https://en.wikipedia.org/wiki/Strigi" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0

::summary File indexing and file search framework ::

::data[format=table title="Infobox software"]

Field	Value
name	Strigi
logo	Oxygen15.04.1-strigi.svg
logo size	70px
developer	Jos van den Oever
Flavio Castelli
latest release version	0.7.8
latest release date
programming language	C++
operating system	Linux
genre	Search tool
license	LGPL
website
discontinued	yes
::

::callout[type=note] the computer software Strigi ::

Strigi was a file indexing and file search framework (see desktop search) adopted by KDE SC. Strigi was initiated by Jos van den Oever. Strigi's goals are to be fast, use a small amount of RAM, and use flexible backends and plug-ins. A benchmark as of January 2007 showed that Strigi is faster and uses less memory than other search systems, but it lacks many of their features. Like most desktop search systems, Strigi can extract information from files, such as the length of an audio clip, the contents of a document, or the resolution of a picture; plugins determine what filetypes it is capable of handling. Strigi uses its own Jstream system which allows for deep indexing of files. Strigi is accessible via Konqueror, or by clicking on its icon, after adding it to KDE's Kicker or GNOME Panel. (In GNOME desktop, it is called the Deskbar applet.) The graphical user interface (GUI) is named Strigiclient.

It was replaced with Recoll in KDE5 Plasma desktop environment.

Features

SHA-1 hash for every file indexed to find duplicates
As of July, 2007 Strigi supports indexing the contents of plain text, PDF, MP3, archives, Debian and RPM packages, and OASIS OpenDocument text (odt), spreadsheet (ods) and presentation (odp) files
D-Bus and socket support for communication between the daemon and search program
Small memory footprint
Xesam query language support
Very portable, currently runs on Linux, Solaris, FreeBSD, Mac OS X and Windows
Pluggable backend: Lucene and HyperEstraier, SQLite and Xapian backends are being worked on
inotify and synchronization to filesystem are being attempted.
Strigi's indexing can be stopped manually, and will suspend itself if running on a laptop's batteries, disk drive runs out of space, and/or runs in the background until the CPU is not busy with tasks that the computer-user is waiting on the CPU for.

Operating systems and desktops

Strigi used to be a core component of the KDE Software Compilation's semantic desktop. Strigi and NEPOMUK used to work together to help create a semantic desktop search. NEPOMUK allows the user to add metadata, which Strigi would index for a more precise search. It has since been replaced with a home-grown solution, the nepomuk-metadata-extractor.

GNOME has an optional applet to search for files using Strigi, named Deskbar. Deskbar is included in the GNOME desktop of Ubuntu 8.10, for example.

References

"Strigi ChangeLog".
"Strigi's features".
(2007-01-17). "Official: Strigi fastest and smallest".
"Index and search with KDE's new Strigi". Linux.com.
"FreeBSD Ports Search".
(2008-07-23). "Strigi Reloaded - The Answer to all our Problems? Hopefully to a few of them. | blogs.kde.org". Kdedevelopers.org.
(10 September 2012). ["[Nepomuk] RFC] New File Indexer". Mail.kde.org.
"Debian - Details of package deskbar-plugins-strigi in sid". Packages.debian.org.

::callout[type=info title="Wikipedia Source"] This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page. ::