VMD is a molecular visualization program for displaying, animating, and analyzing large biomolecular systems using 3-D graphics and built-in scripting. VMD supports computers running Mac OS X, UNIX, or Windows, is distributed free of charge, and includes source code.
Google Earth Pro gives advanced business tools in addition to all the easy-to-use features and imagery of Google Earth.
Small utility that allows you to quickly typeset LaTeX equations, without bothering with file creation, preambles, and so on.
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