Zoho Showtime Is a Live Web Presentation Tool for Slideshows, Including PowerPoint

If you do a lot of public speaking or presentations in front of people, Zoho Showtime could make your life (and job) easier. Showtime makes it easy to take questions from your audience, let them save slides or go back to see previous ones, and you can control the presentation from your phone.

Source: Zoho Showtime Is a Live Web Presentation Tool for Slideshows, Including PowerPoint