WUI (Web User Interface) is an MVC framework for writing
Web UIs in Java. It makes it possible to write Web applications
with components, widgets, and events rather than JSPs. It
runs in any servlet 2.3 container.
Todays applications tend to be skinnable: cdplayers, email notifiers, even operating systems. SkinLF provides a skin system for Java programs.
A Linux firewall distribution.
A mail filtering manager, supporting Sieve, procmail, maildrop and IMAP filters.