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Modelling Software

RasMol is a free molecular graphics visualization program used for exploring biological macromolecule structures (i.e., proteins, nucleic acids and other small molecules such as those found in the Protein Data Bank (PDB).

Find Rasmol-An Introductory Guide by Bob Bruner.


Discovery Studio Visulaizer and ActiveX Control 3.5 is a free commercial-grade graphics visualization tool for viewing, sharing, and analyzing protein and modeling data. Complete a form to receive the free DS Visualizer and ActiveX Control for interactive 3D visualization.

Chemical Drawing Software


ChemSketch is a free software similar to ChemDraw and contains other functions such as making chemical movies (above).

Other free drawing softwares include: ​​​​​​​

  • ChemFormula: ChemFormula is a macro that works in Microsoft Word for Windows. It allows you to type chemical formula expressions without worrying about formatting. The following table shows some examples of what ChemFormula does.

    Examples to show
how ChemFormula formats chemical expressions