Ask HN: What alternatives to Powerpoint/Prezi are there?

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

Maybe because:

> Some requirements for me: * Infinite canvas/Path editing

The fact that it is cloud-based and therefore requires an Internet connection means it is the opposite of "portable" for me. When I go to client meetings and have to deliver a presentation, I can't assume I will be connected to the Internet. That's why I use PowerPoint.

org-mode with beamer output. For me there are a couple of large benefits:

- You can include LaTeX directly in documents and preview LaTeX inline in Emacs. This is not restricted to LaTeX math, but any kind of LaTeX environment. I often use this for including TikZ figures.

- You can include snippets of code in your document, execute them inline and include the results in your presentation. For instance, you can use this to include graphs using gnuplot, R, or matplotlib. Moreover, you can use tables org-mode tables as input to these code fragments.

- You can use tags for headers/slides. I often use this to generate two different slide decks: one that I put on the website before the lecture and a second one with solutions for me to use during the lecture.

- org-mode is a markup language that is similar to Markdown, so it is generally less work to write than LaTeX.

- Like LaTeX and Markdown, you can put everything under version control.

https://infinitekind.com/syncspace is an infinite canvas app, though I’m not sure how well it works for sharing/teaching usecases