Twenty great tech products on show at DEMO 2011

Build-your-own iPhone and Android apps, cloud services, photo tools and more


About 50 startups will unveil hot new products at the DEMO Spring 2011 conference this week. Mobile applications for iPhone and Android, cloud-based services for businesses and consumers, security for Facebook, a dating site for gays and lesbians and even a headset that reads your mind will be on display. Each vendor will get just six minutes to impress the crowd. Here's an early look at 20 of the hottest companies you'll see at the show.