Avogadro-1.2.0n-win64.exe !free! Link

Reads and writes over 80 chemical file formats via the Open Babel library, including .pdb , .xyz , and .cml .

Though it was released in 2016, many researchers prefer this "legacy" version because it is more for specific tasks than the newer engine. avogadro-1.2.0n-win64.exe

: Available via the Official Avogadro SourceForge page . Reads and writes over 80 chemical file formats

Quickly create input files for popular quantum chemistry packages like GAUSSIAN, GAMESS, NWChem, and Q-Chem. and Python scripts. Computational Support

: Supports a plugin system for adding new rendering modes, interactive tools, and Python scripts. Computational Support