XULPlayer is a free, open-source, full-featured media player that is fully self-contained and easy to customize because of its XUL base. XULPlayer plays proprietary formats (such as Flash video) and requires minimal CPU resources, which makes XULPlayer an excellent option for older computers that might not be able to handle other resource-intensive media players. XULPlayer is a work in progress and will improve with time. The project deserves help -- financial donations and volunteered time.