pptx-tools, a collection of cli tools for interacting with Powerpoint presentations. Covers use cases that PowerPoint doesn't support. Currently in the making:

* pptx-grep - find text across multiple powerpoints, yield file/slide no and text excerpt of match

* pptx-dump - dumps extended info about a powerpoint, such as number of slides, applied master slides, used fonts etc.

* pptx-lint - allows to define validation rules for pptx based on content and/or formatting. E.g. presentation must not contain word "TBD", all text must be formatted in Arial etc.