Thanks for your interest in Nanoacademic's products. We have a range of atomistic simulations tools that could address your simulation needs. Here is a breaf answer to your questions, please feel free to contact us if you need more informaton:
Yes, we have software that can be installed on windows as well as Linux platforms.
We have an extensive documentation for users on our website https://docs.nanoacademic.com/ . For each software, please consult the installation section for more information.
RESCU and RESCU+ are out DFT-based software that are capable of simulating variety of materials properties including dielectric and magnetic properties. Please see https://www.linkedin.com/pulse/introducing-rescu-dfpt-simulator-innovative-/?trackingId=9qUcuBqaTc6EzGufXA9Arg%3D%3D for an example of ion-clamped dielectric simulation with RESCU. If you could provide us more information about your research interests, we could help you finding the right tools for your workflows.
As mentioned above, documentaions of our tools, including tutorials, are available are https://docs.nanoacademic.com/. For example, you can find more information regarding how to obtain dielectric constant with RESCU at https://docs.nanoacademic.com/rescu/getting_started/dfpt/dfpt/
For more information regarding our licenses or requesting a demo, please contact out sales department at https://nanoacademic.com/contact-us/
Please don't hesitate to contact us if you need more information about out products.