BlueChat is a fast, Free, nice looking, web based chat script. Made to be quick and not hog server resources, but still has many features. Multiple channels, actions, colored names and messages, smile images.
A script to use IRC from a web browser without having to have access to an IRC port or Java (but it does need a frames compatable browser).
With colours, access controls and more..
BURP is a very configurable user registration system (Password Protection/Membership & Profile Management) for Apache w/mod_perl and the MySQL DB. BURP uses cookies to store user information, keeping DB access to a minimum. It provides the user-info simply via CGI Environment variables, for easy, black-box use with other apps/logging. Directories can be protected by Apache config directives. All its pages are completely customizable through html templates with embedded perl.
Supports an unlimited number of images, unlimited number of image categories, image access tracking, image descriptions, multiple user administration, extensible file types for viewing of unlimited types of media, templates, and complete control over the style of your gallery. All through a simple web based administration site.