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Beagle is a search system for Linux and other such modern Unix-like systems, enabling the user to search documents, chat logs, email and contact lists in a similar way to Spotlight in Mac OS X, or Google Desktop.

Beagle is a Linux desktop-independent service which transparently and unobtrusively indexes your data in real-time.

Beagle includes a GNOME-based graphical tool and a web based interface for searching its indexes. It also provides programming interfaces (in C#, C, and Python) so that any application can plug into Beagle's searching and indexing power.

Beagle uses the Lucene indexing system from the Apache project and the prodigious Doug Cutting, ported to .NET by George Aroush.

 Beagle 0.3.9

Free to download


X11/MIT License, Apache License

Joe Shaw, Jon Trowbridge, Nat Friedman, Todd Berman, Michael Levy, and more than a dozen other contributors

Website (parked)

System Requirements
Mono 1.2.4 or newer
glib-sharp2 2.4.0 or newer for the indexing daemon
gtk-sharp2 and gnome-sharp2 2.4.0 or newer (to use the GNOME-based user interface)
NDesk-DBus 0.5.2 or newer. NDesk-DBus is used to query Hal for battery and AC status
GMime 2.2.0 or newer. GMime is used to parse email messages
libexif 0.5 or newer, for extracting metadata from image files
taglib# for extracting metadata from audio files
scrnsaver.h file from X
glib-2.6 (or newer) and libxml-2.6.19 (or newer)

Planet Beagle, Beagle Demos, Peagle, Beagle++

Selected Reviews:

Beagle lets you find:

  • Documents
  • Emails and attachments
  • Web history
  • IM/IRC conversations
  • Addressbook contacts
  • Calender appointments
  • Notes
  • Source Code
  • Images
  • Music/Video files
  • Archives and their contents
  • Applications

Beagle supports the following data sources:

and extracts text and metadata from the following file formats:

  • Folders
  • Office Documents
    • (sxw, sxc, sxi and more)
    • OpenDocument (odt, ods, odp)
    • Microsoft Office (doc, xls, ppt)
    • AbiWord (abw)
    • Scribus (sla)
    • Rich Text Format (rtf)
    • PDF
  • Text Documents
    • HTML (xhtml, html, htm)
    • Source code (Boo, C, C++, C#, Fortran, Java, JavaScript, Lisp, Matlab, Pascal, Perl, PHP, Python, Ruby, Scilab and Shell scripts)
    • LaTeX
    • Plain text (txt, any plain text file that isn't filed under any other category)
  • Documentation/Help Documents
    • Texinfo
    • Man pages -gzip and bzip2 compressed man pages 
    • Docbook
    • Monodoc
    • Windows help files (chm)
  • Images (jpeg, png, bmp, tiff, gif, svg)
    • F-Spot and Digikam tags in the images are also indexed
  • Audio (mp3, ogg, flac, ape, mpc, m4a, aac, tracker, amiga audio, wma)
    • m3u and pls playlists
  • Video (mpeg, asf, wmv, mng, mp4, quicktime and other formats supported by MPlayer or Totem)
  • Archive files (zip, tar, gzip, bzip2) and their contents
  • Application launchers
  • Linux packages (ebuild, rpm, dpkg)
  • Generic XSLT files

Return to Productivity Tools Home Page | Return to Desktop Search Engines Home Page

Beagle also features in our 'Linux Equivalents to Windows Software' section. The category selector below allows you to filter the different types of software included in that separate article.


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Last Updated Sunday, June 22 2014 @ 09:45 AM EDT

We have written a range of guides highlighting excellent free books for popular programming languages. Check out the following guides: C, C++, C#, Java, JavaScript, CoffeeScript, HTML, Python, Ruby, Perl, Haskell, PHP, Lisp, R, Prolog, Scala, Scheme, Forth, SQL, Node.js (new), Fortran (new), Erlang (new), Pascal (new), and Ada (new).

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