Avogadro is an advanced molecule editor and visualizer. Avogadro is designed for cross-platform use in computational chemistry, molecular modeling, bioinformatics, materials science, and related areas. It offers flexible high quality rendering and a powerful plugin architecture.
Avogadro is a free, open source molecular editor and visualization tool. It is designed for use on Mac, Windows, and Linux. It also offers flexible high quality rendering and a powerful plugin architecture.
More about Avogadro, including development details and downloads can be found at http://avogadro.cc