Draftsend - Presentations you can 👀 and 👂
SlideLizard - Powerpoint plug-in for live audience interaction
Slidebean - Presentations that design themselves
Pingo - Optimize images for the web quickly 🖼️⚡
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.
Imakiku - Imakiku is an audience response system for real-time voting, posting comments, and surveying.