These are executables for the different platforms, only the executables for SGI and linux are regularly updated. Extension: default executable dimensioned for 256 orbitals .512 ... 512 .. .1024 ... 1024 ... Since molden3.9 memory for orbitals is allocated dynamically mpfit includes code to fit desired multipole moments to the electrostatic potential _pdb The z-matrix editor can handle 20000 atoms, which is enough to create a z-matrix for most proteins. This allows you to do aminoacid manipulations on your proteins. gmolden Is the Opengl interactive version of molden