Gallery 2.0 ( http://gallery.menalto.com ) is a open source web based photo album. It requires Apache, PHP, and MySQL, so it would be a perfect fit for XAMPP. It is very flexible and feature rich. The best thing is that it is fully browser based. No client side software required.
Any PHP-based web application works with XAMPP, Gallery is no exception...
Rob Loach [Website] [Projects] [Blog]