iSlide is described as 'all-in-one PowerPoint add-in. Handy design tools. 180k+ built-in resources' and is an app in the Office & Productivity category. There are more than 50 alternatives to iSlide for a variety of platforms, including Windows, Online / Web-based, Mac, Linux and iPad. The best alternative is Prezi, which is free. Other great apps like iSlide are Google Slides (Free), Reveal.js (Free, Open Source), Sozi (Free, Open Source) and Keynote (Free).
Prezi allows anyone who can sketch an idea on a napkin to create and perform stunning non-linear presentations with relations, zooming into details, and adjusting to the time left without the need to skip slides.
impress.js is a presentation framework based on the power of CSS3 transforms and transitions in modern browsers and inspired by the idea behind prezi.com - an "infinite canvas" for your presentation. Check out the demo at...
Adobe Spark Video, formerly known as Adobe Voice, now part of the Adobe Spark suite, helps anyone create stunning animated videos in minutes. No filming required — just record your voice in short increments to tell your story.