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Sep 30, 2014

OpenMM 6.1 Available

By Joy Ku

This new release of OpenMM contains lots of new features.

First, there are several new force fields. These include:

* AMOEBA 2013
* The CHARMM polarizable force field
* TIP3P-FB and TIP4P-FB water models

OpenMM also now has the ability to read CHARMM parameter and topology files. This gives you yet another way to set up your systems for simulation. It can now directly read files from nearly all the major simulation packages.

This version also has improved performance, a new API for tabulated functions used in custom forces, a new type of virtual site, and several bug fixes.

To read about the new features in detail, visit

To download this latest version of OpenMM, visit