[constexpr]

Figma (https://www.figma.com) is probably a perfect fit for your use case. It's an interface design tool but it can also be used for presentations. Benefits:

* Free for individual use

* Completely cross-platform (browser-based)

* Has an infinite canvas

* Has advanced path editing

* Has a presentation mode for slides (the play button)

* Supports simultaneous real-time editing if you need to work with someone else

[lighttower]

Looks really interesting. Thanks for this. How do you make it useful for slides? Each slide is one UI mockup?