GitPitch subscribers enjoy GitPitch Desktop. It’s a dedicated desktop presentation tool that let’s you develop, preview, and present slide decks offline.
Within the Desktop press the D key on your keyboard when viewing any slide deck to open the Desktop Document Generator. With one click you can then export your slide deck as a PPTX document.
Your PPTX document is a highly portable document that can be open directly within Microsoft PowerPoint and Apple Keynote on your desktop.
The documented can also be published to Microsoft Office 365, Apple iCloud, and Google Slides.
For further details, see the following blog post.