URL Notification System (UNS) uses simple Web pages to show messages and alerts around your campus. Every zone can have its own custom messages, and an emergency mode can be set that overrides all pages in all zones. Active Directory is supported for user access. RSS feeds are supported. Lists of URLs can be copied from one client to anther or from another client zone.
OmegaBB incorporates AJAX thinking into forum software, making a real-time message board unlike all others. It features tabbed forums for quick and easy navigation, notification on a side panel when any of your watched threads change, public and private threads, a wiki article system, and more.
Collax Groupware Suite is a complete collaboration, e-mail, and messaging server with Outlook MAPI support. It offers enterprise email server functions, anti-spam and anti-virus filters, GUI management, a file server for SMB, NFS, FTP, and Apple shares, backup/restore server, IM server, and fax and SMS server. The groupware offers AJAX Web mail, calendar, team calendar, contacts, and tasks, and supports ActiveSync for mobile devices. It is free for private or commercial use of up to five users.