No specific info about version 10.5. Please visit the main page of Mathcad Professional on Software Informer.
I think, the program is very good.
Comprehensive and flexible English-based translation tool for professionals.
Spreadsheet Professional is an Excel Addin that works with all versions of Excel
Professional CAD applications are expensive, very expensive.
Scott Professional Photo Studio enhances the workflow for photographers.
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3DCT Professional™ solves the two major issues in 3D design collaboration.
I think, the program is very good.