Well, I'm not talking about programs like NukeX, Cinelerra, Jahshaka because they aren't either free or feature rich. I have seen couple of cool videos done on Linux platform, most likely to be Ubuntu.
What is the magic application they are using to composit those videos..? Can upcoming LightWorks workout these effects...? Is there any Linux native OpenGL based application to deal with particles, just like Particle Illusion for Windows?