Draftsend - Presentations you can 👀 and 👂
SlidesPPT - Beautiful free presentation templates for Google Slides
Slidebean - Presentations that design themselves
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.
Templates by 24Slides - The world’s best library of free presentation templates.
Reveal.js - A framework for easily creating beautiful presentations using HTML