WAbalone (molecular mechanics)
WAdvanced Simulation Library
WAscalaph Designer
WAutochem
WAvogadro (software)
WBALL
WChemicalize
WChemistry Development Kit
WCP2K
WCrystalExplorer
WDirac (software)
WFHI-aims
WGabedit
WGhemical
WHORTON (software)
WJME Molecule Editor
WJOELib
WMercury (crystallography)
WMOLCAS
WMolden
WMOLPRO
WNewton-X
WOctaDist
WOpen Babel
WORCA (quantum chemistry program)
WPLATO (computational chemistry)
WPQS (software)
WQuantum ESPRESSO
WRMG (program)
WSAMSON
WSIESTA (computer program)
WSpartan (chemistry software)
WTURBOMOLE
WWIEN2k