"... feature-rich software application designed for creating and managing a list of contacts, tasks and events. It is oriented toward all types of users, even those with little experience in such tools."
Status: not tested. I'm basing the portability status on the dev's webpage, listing a portable version as only available for the non-free versions: http://www.winpim.com/editions.htm
Webpages:
http://www.winpim.com/
http://www.softpedia.com/get/Office-too ... M-XP.shtml