Jmol is a free, open source molecule viewer for students, educators, and researchers in chemistry and biochemistry. It is cross-platform, running on Windows, Mac OS X, and Linux/Unix systems.

• The JmolApplet is a web browser applet that can be integrated into web pages.
• The Jmol application is a standalone Java application that runs on the desktop.
• The JmolViewer is a development tool kit that can be integrated into other Java applications.

[note: listed as universal binary because it is a java application which will run without emulation on any system that has a jre/jvm, regardless of processor architecture.]