Spark is a Scripts software developed by Jive Software. After our trial and test, the software is proved to be official, secure and free. Here is the official description for Spark:

MarydownEditor: Spark 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. It also offers a great end-user experience with features like in-line Spell checking, group chat room bookmarks, and tabbed conversations.