OpenFX is a powerful, free graphics tool to create 3D animations and models.
This program also does rendering, morphing, and a large quantity of special effects to add to your animation. It can create different colour filters, simulate mist, fire, laser effects, animations with stars, etc... You can also create fireballs and various types of atmospheric effects.
OpenFX has various explosion effects to give a touch of the spectacular to your animations.
It also has many Video and XVideo filters. With OpenFX you can create almost any animation you can think of, and it´s also free.