SolarWinds Netflow Traffic Analyzer - Identify how bandwidth is being used with NetFlow Traffic Analyzer for SolarWinds Network Performance Monitor. Download free 30-day analyzer software trial!
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.
Zabbix - Track, record, alert and visualize performance and availability of IT resources
StatusCake - Website Uptime Monitoring & Alerts – Free Unlimited Downtime Monitoring
ManageEngine NetFlow Analyzer - Bandwidth management made easy - Get the best combination of network traffic analysis and control
Better Uptime - We call you when your website goes down