Scribus is an open source desktop publishing application for Linux, Mac and Windows. It comes with plenty of templates to get you started quickly. A variety of components can be added to spice up creations and these, in turn, can be readily modified to meet your needs.
If you’re looking for a versatile and powerful open source chat client for Windows and Linux, then take a look at Pidgin. Pidgin supports multiple simultaneous chat room logins and a wide range of Instant Messaging protocols, including AIM, ICQ and MSN Instant Messenger.