DUSK - Anonymous live video
Pingdom - With website monitoring from Pingdom you will be the first to know when your website is down. No installation required. 30-day free trial.
Periscope on Twitter for iOS - Stream live video inside your tweets
StatusCake - Website Uptime Monitoring & Alerts – Free Unlimited Downtime Monitoring
Live Video On Tumblr - Tumblr's answer to Periscope, Facebook Live and Twitch
Better Uptime - We call you when your website goes down