VMD

VMD screenshots

With VMD you can visualize molecules and molecular systems in 3D mode
Setup Screen
VMD 1.9 : Setup Screen

Alternative downloads

Express Animate
Create motion animations and also add animations to your videos.
3.02
FREE
RasMol
It enables the visualisation of proteins, nucleic acids and small molecules.
2.7.5.2
FREE
Exploring Our Molecular Selves (3D Animation)
It will take you inside for a close up look at the Molecular Selves.
1.00.0
FREE