A DivX/XviD/DVD movie database for film buffs & collectors. Monotheka is a (yet!) simple application to organize and keep track of your movie catalogue. It runs on Linux platform using the GTK toolkit. It's designed to be simple and GNOME / HIG compliant. It's written in Mono. It's free.
It supports a plugin architecture to easily extend the functionality (Export plugins, Import plugins, Auto-fill plugins, etc...)
The aim is to create a nice-looking, intuitive application that allows you to quickly enter, search, manage and share movies.