| Software | Platform | Key Strengths | |----------|----------|----------------| | | Windows, Mac (wine) | Freeware, IUPAC naming, 2D drawing, good export options. | | MarvinSketch (ChemAxon) | Win, Mac, Linux, Web | Very powerful, predicts pKa/logP, free for academic use. | | KingDraw | Win, Mac, Android, iOS | Modern interface, cloud sync, completely free. | | Biovia Draw (Dassault) | Windows | Formerly ISIS/Draw, basic but reliable. | | XDrawChem | Linux, Mac, Windows | Open-source, simple, fast. |
ChemDraw is generally not "freeware," but can be obtained for free under the following circumstances: Institutional/Site Licenses: Chemdraw Professional 15.0 Free Download
The current developer, Revvity Signals, offers official trials and subscription tiers: | Software | Platform | Key Strengths |
For most undergraduate needs, or ChemSketch is more than sufficient. Mac (wine) | Freeware