http://matterial.sourceforge.net/matterial is a free and open source (GNU GPL) collection of software tools for artists, available on Linux.So what is matterial ? matterial
is a free and open source unified media processor.
With it you can do non-linear editing and compositing for movies. You can
use it to compose music or create sound effects. You can use it for
sound synthesis. Or you can even use it to create classical animations
See website for more details...Educationmatterial
Aims to help people developing KDE educational software for children and teens. Ideas for projects and information on existing programs, news, contact details, and resources.