Jmol Alternatives
Jmol is described as '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' and is an app in the education & reference category. There are more than 10 alternatives to Jmol for a variety of platforms, including Mac, Windows, Linux, Online / Web-based and Android. The best alternative is Avogadro, which is both free and Open Source. Other great apps like Jmol are Calistry.org, UCSF Chimera, Rasmol and VMD - Visual Molecular Dynamics.
Avogadro is an advanced molecule editor and visualizer designed for cross-platform use in computational chemistry, molecular modeling, bioinformatics, materials science, and related areas.
Calistry is an online Chemistry Calculator. Till date Calistry contains 70+ calculators in the field of Chemistry. Everything in the website is entirely free to use.
UCSF Chimera is a highly extensible program for interactive visualization and analysis of molecular structures and related data
No screenshots yetRasMol is a computer program written for molecular graphics visualization intended and used primarily for the depiction and exploration of biological macromolecule structures, such as those found in the Protein Data Bank.
VMD is a molecular visualization program for displaying, animating, and analyzing large biomolecular systems using 3-D graphics and built-in scripting.
UCSF ChimeraX (or simply ChimeraX) is the next-generation molecular visualization program from the Resource for Biocomputing, Visualization, and Informatics (RBVI), following UCSF Chimera.
No screenshots yetGhemical is computational chemistry package, which is licensed under GNU GPL . The ghemical authors are listed here .
VESTA is a 3D visualization program for structural models, volumetric data such as electron/nuclear densities, and crystal morphologies.