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A molecular viewer for Windows9x systems with sequence editor and protein builder. Free for academic use. Additionaly the iMol molecule viewer is available for Mac OS X systems.

Open source molecule viewer written in Java. It runs as a standalone application and as a web browser applet.

3D molecular visualization, rendering and file format conversion tools for biological and/or chemical data, for Windows and Linux. Evaluation version available.

Plastic molecular structure models for research and education in science, intended especially for biochemistry.

A molecular model building program for displaying data from MM2, MOPAC, Gaussian94, charmm and amber4 outputs. Supported on most windows, mac and unix platforms.

Plastic molecular models for use in chemistry, biochemistry, molecular biology (DNA double helix), semiconductors and crystal lattice structures.

Provided for the convenience of users and software developers of open source versions of RasMol.

ProteinScope is a free program to view and create animations of Protein Data Bank PDB files.

A free and flexible molecular graphics and modelling package which can be also used to generate animated sequences.

An open-source graphical front end for computational chemistry programs such as Gaussian, Gamess, and Mopac. Available for Linux, FreeBSD, Mac OS X, and other Unices.