This article covers a free online interactive presentation maker with Unsplash integration that allows you to quickly find & use royalty-free images.

Here is a free online collaborative presentation maker. It is named as “Beautiful.AI”. You can invite others to create and edit presentation in real-time with others. You can also use image library, beautiful templates, etc., and save the presentation to PC as PDF and PPTX file.

Presenter Club is a free service to create beautiful presentations, store notes, and share presentations with others online. Your presentations remain public.

Moovly is a free online application to create animated presentations with tons of predefined video templates, cartoon objects, backgrounds, doodles, etc

Slides is a web application to create beautiful and well structured presentations. You can add various presentable elements and add animations as well.