Many presentation programs allows users to import and use Microsoft Visio drawings (diagrams, shapes etc.) on some of the slides in their documents. This is usually done through an import function, much like any other element or object that you would use in your presentation.
For PowerPoint files (.pptx), the original program (PowerPoint) is obvious choice, however other presentation programs may also be viable in this case and allow you to achieve vsdx to pptx conversion just fine.Open VSDX file Open PPTX file
Free presentation program from OpenOffice.org
A versatile diagramming program
Powerful multimedia presentation software tool from LibreOffice suite
A presentation program from the Microsoft Office suite
Mac version of popular presentation software from Microsoft
Visual processor used to create high quality presentations, charts and graphs