PyMOL

	PyMOL large.png A PyMOL instance, with the Viewer and GUI visible.
Original author(s)	Warren Lyford DeLano
Developer(s)	Schrödinger, Inc.
Stable release	1.7.6 / 4 May 2015; 10 years ago
Written in	C, C++ and Python
Operating system	Cross-platform
Type	Molecular modelling
License	Python license
Website	pymol.org

PyMOL is an open source program for the viewing and manipulation of data from proteins and other biological molecules. PyMOL is written in the Python programming language.

PyMOL Media

Example of some molecule editing features of PyMOL, dihedral bond rotation and interactive molecular relaxation with Sculpting mode. These are useful features to prepare input geometry for quantum chemistry software
The same protein structure (TEV protease - PDB 1LVB) rendered in different modes. Standard cartoon, surface, cut-through of surface, highlighted barrels, 'QuteMol'-like, 'Goodsell'-like, glossy-surface, and b-factor putty.

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PyMOL large.png A PyMOL instance, with the Viewer and GUI visible.
Original author(s)	Warren Lyford DeLano
Developer(s)	Schrödinger, Inc.
Stable release	1.7.6 / 4 May 2015; 10 years ago (2015-05-04)
Written in	C, C++ and Python
Operating system	Cross-platform
Type	Molecular modelling
License	Python license^[1]
Website	pymol.org