Spark IM 2.7.3 Instant Messaging client recently released, is an Open Source, cross-platform IM client optimized for businesses and organizations. It features built-in support for group chat, telephony integration, and strong security. This release contains minor fixes and features. Such as an updated build script to support newest versions of IzPack, Ant and Java. Various places in the interface have been fixed to use translations instead of default Yes and No options.