1. ChemDraw: ChemDraw is one of the most widely used chemical drawing programs. It offers a comprehensive suite of drawing tools and features for creating chemical structures and reactions. ChemDraw is available for both Mac and Windows platforms.
2. MarvinSketch: MarvinSketch is a chemical drawing tool developed by ChemAxon. It provides a user-friendly interface and supports drawing structures, reactions, and queries. MarvinSketch is compatible with Mac, Windows, and Linux.
3. ACD/ChemSketch: ACD/ChemSketch is a powerful chemical drawing and visualization tool. While the original ChemSketch application is only available for Windows, ACD/ChemSketch offers a web-based version called ACD/ChemSketch Freeware Online, which can be accessed on Mac and other platforms.
4. BKChem: BKChem is an open-source chemical drawing program that is compatible with Mac, Windows, and Linux. It provides basic drawing and editing tools for creating chemical structures.
5. ChemDoodle: ChemDoodle is a cross-platform chemical drawing software that works on Mac, Windows, and Linux. It offers a range of drawing tools, 3D visualization, and publishing features.