Spark is a full-featured instant messaging (IM) and groupchat client that uses the XMPP protocol. The Spark source code is governed by the GNU Lesser General Public License (LGPL), which can be found in the LICENSE.html file in this distribution. Spark also contains Open Source software from third-parties. Licensing terms for those components is specifically noted in the relevant source files.
Full Specifications
What's new in version 2.6.3
Version 2.6.3 fixed issues with login screen shows disabled fields, search in history is not working, and NPE when exiting a chat window with ESC.
General
ReleaseJune 5, 2012
Date AddedJuly 1, 2011
Version2.6.3
Operating Systems
Operating SystemsWindows 2000, Windows Vista, Windows, Windows 7, Windows XP