authorSTREAM - authorSTREAM enables presenters to upload & share PowerPoint, Keynote & PDF presentations online; embed in blogs, convert to video and share on social networks.
Imakiku - Imakiku is an audience response system for real-time voting, posting comments, and surveying.
projeqt - With Projeqt, your presentations never remain static. Pull in live tweets or blog feeds, insert an interactive map, add audio notes or stream videos. Let your presentations be as dynamic as you are.
Pingo - Optimize images for the web quickly 🖼️⚡
Zentation - Affordable webinar software. Create online presentations with synchronized video and PowerPoint.
Ideahunt.io - Ideahunt.io is a tool that is now available as Svava, it allows you to make every meeting successful, and provides you the features to conduct interactive meetings.