MedChem Designer is described as '"MedChem Designer 3.0 is a free chemical structure drawing program. MedChem Designer can open SMILES, SDF, MOL, CSK, and RXN file types. Up to 32 compounds can be displayed in one window. Images can be exported in SMILES, SD, MOL, CQF, bitmap, JPG, or PNG formats' and is an app. There are four alternatives to MedChem Designer for a variety of platforms, including Windows, Mac, Linux, Android and iPhone apps. The best MedChem Designer alternative is Chemaxon Marvin, which is free. Other great apps like MedChem Designer are ChemDraw, ACD/ChemSketch and ChemDoodle.