GTmetrix - GTmetrix is a free tool that analyzes your page's speed performance. Using PageSpeed and YSlow, GTmetrix generates scores for your pages and offers actionable recommendations on how to fix them.

Netumo - Ensure healthy website performance, uptime, and free from vulnerabilities. Automatic checks for SSL Certificates, domains and monitor issues with your websites all from one console and get instant notifications on any issues.

PageSpeed Insights - PageSpeed is addon for ...

AppZero - AppZero is a monitoring and migration tool that allows users to keep track of different applications and servers in both simple and complex IT environments.

WebPagetest - Run a free website speed test from multiple locations around the globe using real browsers...

RedGate SQL Monitor - SQL Monitor helps you and your team find issues – before they become problems