Pidgin (software)

Initial release 1999 as Gaim
Stable release 2.10.0  (20 August 2011; 11 days ago (2011-08-20))
Preview release
Written in C (C#, Perl, Python, Tcl are used for plugins)
Platform Cross-platform
Available in Multiple languages
Type Instant messaging client
License GNU General Public License

Pidgin (formerly named Gaim) is a multi-platform instant messaging client, based on a library named libpurple. Libpurple has support for many commonly used instant messaging protocols, allowing the user to log into various different services from one application.

The number of Pidgin users was estimated to be over 3 million in 2007.[1] Both Pidgin and libpurple are free software, released under the terms of the GNU General Public License.



Pidgin running on Ubuntu

Pidgin provides a graphical front-end for libpurple using GTK+.[2] Libpurple supports multiple instant-messaging protocols.

Pidgin supports multiple operating systems, including Windows as well as many Unix-like systems such as Linux, BSD, Mac OS X, and AmigaOS (through the X11 engine). It has built-in support for NSS, offering client-to-server message encryption for protocols that support it. The program is extendable through plugins, including "Off-the-Record Messaging" and Pidgin encryption,[3] providing end-to-end message encryption.

Pidgin features some of the standard tools for an instant-messaging client, such as a contact list, file transfer on supported protocols, and conversation and chat logging. Tabbed conversations is an optional feature on Pidgin. The IM window consists of the message window, formatting tools, and an edit box.

Users can add contacts (usually known as "Buddies") in the "Buddy List" window or in the IM window. As a client that supports IRC and other chat programs, Pidgin can also add different IRC channels and IM Chats. Contacts with multiple protocols can be grouped into one single contact instead of managing multiple protocols, and contacts can be given aliases or placed into groups.

To reach users as they log on or a status change occurs (such as moving from "Away" to "Available"), Pidgin supports on-action automated scripts called Buddy Pounces to automatically reach the user in customizable ways.

Pidgin supports some file transfers, with the ability to cancel transfers and observe multiple transfers in a separate window, while lacking some protocol-specific features like the folder sharing available from Yahoo. Older versions of Pidgin did not support direct, peer-to-peer file transfers over the MSN protocol and instead relayed file transfers over a slower connection via the MSN servers however direct connection support has been added since Pidgin 2.7.

As of version 2.6 (released on August 18, 2009) Pidgin has a voice/video framework which uses Farsight2 and is based on Mike Ruprecht's Google Summer of Code project from 2008.[4] That release provides the ability to have voice/video conversations using the XMPP protocol (including Google Talk), though the implementation is not yet fully complete. The framework will also allow for voice/video conversations on other protocols, such as MSN and Yahoo, in the future.[5]

Further features include support for themes, emoticons, spell checking, and notification area integration.[6]

Supported protocols

The following protocols are officially supported by libpurple 2.9.0, without any extensions or plugins:[7]

Some XMPP servers provide transports, which allow users to access networks using non-XMPP protocols without having to install plugins or additional software. Pidgin's support for XMPP means that these transports can be used to communicate via otherwise unsupported protocols, including not only instant messaging protocols, but also protocols such as SMS or E-mail.

Additional protocols, supported by third-party plugins, include QQ[8], Skype,[9] and the Xfire gaming network (requires the Gfire plugin).[10]


Various other features are supported using third-party plugins.[11] Such features include:


Gaim 2.0.0 beta 6 running under GNOME 2.16.0

The program was originally written in or before 1999 by Mark Spencer, an Auburn University sophomore, as an emulation of AOL's IM program AOL Instant Messenger on Linux using the GTK+ toolkit.[12] It was named GAIM (GTK+ AOL Instant Messenger) accordingly. The emulation was not based on reverse engineering, but instead relied on information about the protocol that AOL had published on the web; development was also assisted by some of AOL's technical staff.[12][13] Support for other IM protocols was added soon thereafter.[12]

Naming dispute

In response to pressure from AOL, the program was renamed to the acronymous-but-lowercase gaim. As AOL Instant Messenger gained popularity, AOL trademarked its acronym, "AIM", leading to a lengthy legal struggle with the creators of GAIM, who kept the matter largely secret.[14]

On April 6, 2007, the project development team announced the results of their settlement with AOL, which included a series of name changes: Gaim became Pidgin, libgaim became libpurple, and gaim-text became finch. The name Pidgin was chosen in reference to the term "pidgin", which describes communication between people who do not share a common language.[15] The name "purple" refers to "prpl", the internal libgaim name for an IM protocol plugin.

Due to the legal issues, version 2.0 of the software was frozen in beta stages. Following the settlement, it was announced that the first official release of Pidgin 2.0.0 was hoped to occur during the two weeks from April 8, 2007.[16] However, Pidgin 2.0 was not released as scheduled; Pidgin developers announced on April 22, 2007 that the delay was due to the preferences directory ".gaim".[17]

Pidgin 2.0.0 was released on May 3, 2007. Other visual changes were made to the interface on 2.0.0, including updated icons. [18]


Other notable software based on libpurple

See also

Free software portal


  1. ^ Luke Schierer discusses Pidgin, Open source and life. Interview by PC World Australia, 10 October 2007
  2. ^ "What Is Libpurple - Pidgin - Trac". Retrieved 2009-03-22. 
  3. ^ Pidgin-Encryption
  4. ^ "Pidgin Changelog". Retrieved 2009-08-22. 
  5. ^ "Pidgin Voice and Video". Retrieved 2009-08-22. 
  6. ^ "About Pidgin". Retrieved 2010-09-22. 
  7. ^ Pidgin developers. "Protocol Specific Questions". Retrieved 2011-06-30. 
  8. ^ "libqq". Retrieved 2011-06-14. 
  9. ^ "Skype API Plugin for Pidgin/libpurple/Adium". Retrieved 2009-07-06. 
  10. ^ "ThirdPartyPlugins". Retrieved 2009-03-02. 
  11. ^ "Pidgin Third-Party Plugins". Retrieved 2009-09-22. 
  12. ^ a b c Matthew Herper: Better Instant Messaging Through Linux, , 16 July 2002
  13. ^ GAIM: GTK+ America OnLine Instant Messenger Original project home page as February 10, 1999 (copy at the Internet Archive)
  14. ^
  15. ^ "Important and Long Delayed News". Retrieved 2007-05-01. [dead link]
  16. ^ "News — Pidgin". Retrieved 2007-04-11. "Now that the settlement is signed, we hope to have the final Pidgin 2.0.0 release late this week or early next." 
  17. ^ "Working towards 2.0.0". Retrieved 2007-04-22. [dead link]
  18. ^ "Identity vs. Account Orientation". Retrieved 2007-05-01. 
  19. ^ "Plain Text Passwords — Pidgin". Retrieved 2007-05-18. 
  20. ^ "No Resume of broken file transfers". Retrieved 2008-12-30. 
  21. ^ "No dcc download resuming". Retrieved 2008-12-30. 
  22. ^ "No ability to resume in IRC file transfers". Retrieved 2008-12-30. 
  23. ^ "Text box resizing issue". Retrieved 2008-03-08. 
  24. ^ In Response to User Demand, Pidgin Forks at the Wayback Machine (archived May 19, 2008).
  25. ^
  26. ^ "#10508: turning on and off groups". Retrieved 2010-10-20. 
  27. ^ "meebo from the backside". Retrieved 2008-10-03. 

External links

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