A Free Comprehensive Chemical Drawing Package
ChemWindow is the software chemists choose for chemical structure drawing and publishing worldwide. It also offers integrated solutions to modify, store, search, and retrieve chemical structures and properties. ChemWindow offers scientists even more solutions. 2D Chemical Structure Drawing. The Chem4Word add-in stores the chemical structures as Chemical Mark-up Language (CML) in the aforementioned Custom XML Parts then renders the structure inside a Custom Control using Drawing ML. The Chem4Word add-in also allows the user to depict the structure by one of its textual descriptors.
ACD/ChemSketch Freeware is a drawing package that allows you to draw chemical structures including organics, organometallics, polymers, and Markush structures. It also includes features such as calculation of molecular properties (e.g., molecular weight, density, molar refractivity etc.), 2D and 3D structure cleaning and viewing, functionality for naming structures (fewer than 50 atoms and 3 rings), and prediction of logP. The freeware version of ChemSketch does not include all of the functionality of the commercial version — see a brief overview of the differences. Visit ACD/ChemSketch to learn more about the commercial version.

| Functionality | Commercial | Freeware |
|---|---|---|
| Advanced drawing tools | ✓ | ✓ |
| Identify tautomers | ✓ | ✓ |
| Name structures with up to 50 heavy atoms | ✓ | ✓ |
| 3D viewer | ✓ | ✓ |
| Export to Adobe PDF | ✓ | ✓ |
| ACD/Dictionary | ✓ | |
| Search files on your computer by structure | ✓ | |
| ACD/Labs extension for ChemDraw | ✓ | |
| Technical Support | ✓ |
As an Educational Tool
ACD/Labs software aids in teaching key chemistry concepts to high school, undergraduate, and graduate chemistry students. In addition, students benefit from exposure in the learning environment to the same tools they will encounter in the workforce.
- Our Academic Site Licensing Program is a convenient way for qualifying academic institutions to make the freeware version of ACD/ChemSketch available to their students and faculty.
- Free access to site licenses of ACD/ChemSketch Freeware are available. Contact us to learn more.
Freeware: One Installation
Blueprint Drawing Software For Mac
Free for personal and academic use (1 individual installation).
Freeware: Academic Site License
Chemical Structure Drawing Software For Mac Free
Free site-wide installation at your academic institution.
Commercial Version: 30-Day Trial
Try the full version (or buy online) for commercial and government use.
NOTE: ChemSketch is compatible with Windows 64-bit only. MAC users please read more information here.
We do not provide technical support for our freeware products.