1. Convert and manipulate chemical data files Openbabel is a GPL and C++ rewrite of the 'babel' program to convert the various file formats used in chemical software. The command-line interface is mostly identical to the old 'babel' executable and recognizes these file formats among many others: Alchemy, ChemDraw, GAMESS, Gaussian, HyperChem, MDL Isis and Molfile, MOPAC, MPQC, PDB, SMILES and XYZ. Right now, openbabel is not a 100% replacement for babel as some file formats and bond order prediction are not yet supported. From Debian 3.0r0 APT