Draftsend - Presentations you can 👀 and 👂
Slidebean - Presentations that design themselves
SlidesPPT - Beautiful free presentation templates for Google Slides
Slides - Slides is a place for creating, presenting and sharing presentations. The Slides editor is available right in your browser. Unlike traditional presentation software, like PowerPoint, there's no need to download anything.
Reveal.js - A framework for easily creating beautiful presentations using HTML
Visme - One easy to use online tool to visualize your ideas to engaging Presentations, Infographics and other Visual Content.