Loop Communications - Loop Communications provides hosted VoIP business phone systems to small businesses and mid-sized companies.
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.
BVoIP - BVoIP allows to easily add Cloud & On-Premise VoIP PBX to the product offering without having to re-invent the wheel or add another layer to the daily operations..
StatusCake - Website Uptime Monitoring & Alerts – Free Unlimited Downtime Monitoring
OnSIP - OnSIP offers cloud phone sytem for business communications across all devices.
Better Uptime - We call you when your website goes down