DeskNow WebMessenger is a Jabber/XMPP secure instant messaging server that includes a Web-based IM client. It can be accessed transparently across firewalls, proxies, and NAT, and supports 128-bit SSL encryption. Other features include the support for unlimited virtual domains, a Web-based administration console, and the ability to send broadcast messages and alerts to all users. It is compatible with the most popular Jabber clients, and can run on any OS.
rsyncbackup is a handy tool for scheduled backups using rsync. rsyncbackup lets you easily setup multiple source folders and destinations, both locally, on your iPod or external firewire disk, or at a remote destination using ssh. rsyncbackup has no GUI, but is based on editing configuration files. The script is meant to be run in a crontab, so user interaction is not neccesary. Basic terminal skills are required to use the program.