CGI:IRC is a Perl/CGI program that allows you to use IRC from a Web browser without having to have access to an IRC port. It does not use Java, but it does need a browser capable of rendering frames. It can be used on a Web page to allow users to chat, or it can be used to access chat from behind a firewall.
Cog is a themeable and modularized intranet homepage written in Perl. The aim is to make almost every aspect configurable via the Web interface to give the user the freedom of choice. It includes modules to search various search engines, add links, and display news items, and a simple todo list.