MD engines

Here is a list of the molecular dynamics engines which are already compatible with PLUMED2. Some of them are free, others require a license.

AMBER (14)
GROMACS (4.5.x - 4.6.x - 5.0.x - 5.1.x)
LAMMPS (6 Apr 2013)
NAMD (2.8 - 2.9)

for a complete and version-specific list refer to the manual.