Site24x7 - Site24x7 offers both free & paid website monitoring services. Monitor websites remotely and receive instant email/sms alerts if your website becomes unavailable. View uptime & performance graphs of your website monitors.

Netformx - Netformx helps Cisco partners & Solution Providers deliver multi-vendor IT solutions quickly & effectively while improving profitability & customer success.

eG Enterprise - From application performance to user experience to infrastructure usage, get performance answers from a single console. Troubleshoot fast with actionable insights.

Entersoft - Entersoft, an award winning application security company, believes in security by design and DevSecOps and provides application security testing services.

SolarWinds Pingdom - With website monitoring from Pingdom, you will be the first to know when your website is down. No installation required. 14-day free trial.

Dotcom-Monitor - Website & Web Application Monitoring