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.
TechEvents.co - Tech and startup events aggregator
StatusCake - Website Uptime Monitoring & Alerts – Free Unlimited Downtime Monitoring
Facebook Local - Discover places to go and events happening near you
Better Uptime - We call you when your website goes down
Eventbrite - Discover Great Events or Create Your Own & Sell Tickets