Which operating systems does Roof Wizard run on?

All AppliCad software runs on Microsoft Windows operating systems (O/S), in all versions.
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Any PC with Microsoft Windows will run our software.
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The Roof Wizard, being a full 3D CAD modelling program, does like to have a minimum 4GB of RAM to operate.

Current generation computers usually have more than enough RAM.
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In addition, the software also works perfectly on a Mac with a Windows enabling sub-system such as 'Fusion' or 'Parallels' and Microsoft Windows installed.
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A mouse with two buttons and a scroll wheel is also highly recommended.
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We have also found the Mac application 'Crossover' from CodeWeavers allows our Roof Wizard to run on a Mac O/S without installing Windows O/S.