graphical, distributed, cross-platform IRC client

Quassel IRC, or Quassel, is an IRC client, introduced in 2008.[1] It is released under the GNU General Public License for GNU and Unix-like operating systems, OS X, and Microsoft Windows. Since the release of Kubuntu 9.04 (Jaunty Jackalope) Quassel is Kubuntu's default IRC client.[2][3] Quassel uses the Qt application framework.

Quassel IRC
Screenshot of Quassel IRC on Arch Linux
Screenshot of Quassel IRC on Arch Linux
Developer(s)Quassel IRC Team
Initial release0.3.0 August 27, 2008 (2008-08-27)
Stable release0.12.4 (May 17, 2016; 4 years ago (2016-05-17)) [±]
Repository Edit this at Wikidata
Written inC++
Operating systemOS X, Unix-like, Windows
TypeIRC client
LicenseGNU General Public License (version 2 or later)


  1. "Changelog" Archived 2013-09-28 at the Wayback Machine. Quassel-IRC.org.
  2. "Kubuntu 9.04 Out in the Wild". Kubuntu.org. 23 April 2009, retrieved 27 November 2009.
  3. Overa, Adam (October 19, 2009). "Large IRC Clients". Tom's Hardware.