Hello Lyndon Edward Smith,

Did you try CCP4?

CCP4 (Collaborative Computational Project Number 4):

• CCP4 provides a suite of programs for macromolecular crystallography, including electron density map calculations. It's free for academic use.
• Website: https://www.ccp4.ac.uk/

Hope this helps!

Regards,

Nitin S.

Yes, there are free software programs available for Windows machines that can be used to generate electron density maps, typically for use in the field of computational chemistry and crystallography. Here are a few options:

PyMOL: PyMOL is a widely used molecular visualization tool that can generate electron density maps. While the free version of PyMOL has limited functionality, it can still be used for basic electron density map visualization. You can download the open-source version known as "PyMOL2" for free.

Website: https://pymol.org/2/

Avogadro: Avogadro is an open-source molecular editor and visualization tool that can also generate electron density maps. It is designed for general chemistry, and it's user-friendly.

Website: https://avogadro.cc/

Jmol: Jmol is another open-source molecular visualization program that can be used to visualize electron density maps. It's not as feature-rich as some other tools, but it's free and relatively easy to use.

Website: http://jmol.sourceforge.net/

XCrySDen: While primarily a crystallography visualization tool, XCrySDen can also generate electron density maps. It's open source and supports a variety of file formats.

Website: http://www.xcrysden.org/

Vesta: Vesta is a visualization program for structural models, and it can display electron density maps generated from crystallographic data. It's free and widely used in the crystallography community.

Website: https://jp-minerals.org/vesta/en/

Remember that the availability and features of these software programs may change over time, so it's a good idea to visit their official websites for the latest information and downloads. Additionally, the quality and accuracy of electron density maps may depend on the underlying computational methods and data used, so it's essential to ensure that you have appropriate input data and settings for your specific research needs.

Few options:

1. CCP4 (Collaborative Computational Project Number 4): CCP4 is a comprehensive software suite for macromolecular crystallography. It includes tools like FFT (Fast Fourier Transform) that allow the calculation of electron density maps from X-ray crystallography data.

2. Phenix: Phenix is another widely used software suite for macromolecular crystallography. It provides various tools for Fourier analysis, including the calculation of 2D and 3D electron density maps from X-ray diffraction data.

3. Coot: Coot is a molecular graphics software commonly used for model building and refinement in macromolecular crystallography. It also includes Fourier map calculation capabilities to generate electron density maps.

4. PyMOL: PyMOL is a popular molecular visualization and analysis software. It has the capability to calculate and display electron density maps from crystallographic data using Fourier analysis techniques.

5. ChimeraX: ChimeraX is a powerful visualization and analysis software for molecular structures. It supports the calculation and visualization of electron density maps using Fourier techniques.

Hope it helps

Dear Lyndon Edward Smith , check this website https://www.iucr.org/resources/other-directories/software?result_42405_result_page=A. Kind regards. Rob