PHP Easy Ticket System is a full blown help desk application that you can use for support, reports, errors, feedback, or a help desk. It has administration control and users can check how their tickets are coming along.
Rifas is a program to generate numbered raffle tickets.
Gestiolus is a very simple Web application system for managing repair work. Written to be used in a school, it can be easily adapted to other employments.
Messaging and collaboration software.
A portable standard for storing CFD analysis data.