Check it out!
IBM® WebSphere® Portal Express V6.1 which offers collaboration, document management, Web content management, presence awareness, and instant messaging in a single, easy-to-deploy solution is now available for a free 60 day trial. WebSphere Portal Express can help your small and midsize business, or large department, achieve faster time to value with easily deployable and customizable example Web sites.
Link to download location >
http://www.ibm.com/developerworks/downloads/ls/wpe/learn.html