JMol

Official Resources

• Homepage: http://jmol.sourceforge.net/
• Documentation: http://jmol.sourceforge.net/docs/
• Source Repository: https://sourceforge.net/projects/jmol/
• License: GNU Lesser General Public License v2.1

Overview

Jmol is a free, open-source Java viewer for chemical structures in 3D. It is designed to be cross-platform, running on Windows, Mac, Linux, and Unix systems. It supports a huge range of file formats and is widely used for teaching, research, and web-based visualization (via JSmol, the HTML5/JavaScript version). It can visualize molecules, crystals, materials, and biomolecules, along with orbitals, surfaces, and vibrations.

Scientific domain: Molecular visualization, crystallography, chemical education
Target user community: Chemists, biochemists, materials scientists, educators

Theoretical Methods

• 3D Rendering (Java 3D / WebGL for JSmol)
• Isosurface generation (Marching Cubes)
• Symmetry operations (Space groups)
• Vibrational animation
• Molecular orbital visualization (Gaussian/Slater)

Capabilities (CRITICAL)

• Visualization: Atoms, bonds, polyhedra, surfaces, orbitals, vibrations
• Web Integration: JSmol allows 3D visualization in browsers without plugins
• File Support: Reads >60 formats (CIF, PDB, XYZ, Gaussian, VASP, QE, etc.)
• Scripting: Powerful scripting language for animation and interaction
• Symmetry: Automatic detection and display of symmetry elements
• Measurement: Distances, angles, torsion angles

Sources: Jmol website

Inputs & Outputs

• Input formats: CIF, PDB, XYZ, CML, MOL, Gaussian logs, VASP POSCAR/OUTCAR, etc.
• Output data types: Images (JPG, PNG), POV-Ray scenes, VRML, script files

Interfaces & Ecosystem

• JSmol: JavaScript version for web embedding
• Java: Native Java application
• Browser: Runs in any modern web browser (JSmol)

Workflow and Usage

1. Open file: File -> Open (or drag and drop).
2. Manipulate view: Rotate, zoom, select atoms.
3. Scripting: Open console, type commands (e.g., color atoms cpk, isosurface cutoff 0.02 mo 10).
4. Export: File -> Export -> Image.

Performance Characteristics

• Lightweight and fast for small/medium systems
• Java version faster than JSmol for large structures
• Highly portable

Application Areas

• Chemical education (interactive tutorials)
• Database visualization (PDB, Crystallography Open Database)
• Quick inspection of calculation results
• Website integration

Community and Support

• Open-source (LGPL)
• Long-standing project (>20 years)
• Active mailing list and wiki
• Developed by Bob Hanson and others

Verification & Sources

Primary sources:

1. Homepage: http://jmol.sourceforge.net/
2. Wiki: http://wiki.jmol.org/

Confidence: VERIFIED

Verification status: ✅ VERIFIED

• Website: ACTIVE
• Documentation: COMPREHENSIVE
• Source: OPEN (SourceForge)
• Development: ACTIVE
• Applications: Molecular visualization, JSmol, education