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.
Wedgies - Realtime polling over social media
SlidesPPT - Beautiful free presentation templates for Google Slides
Poltio - Create and share questions, get answers.
WebSlides - Easily create great-looking HTML presentations.
SurveyMonkey Intelligence - Usage and download metrics for all mobile apps