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.
Tooltip Glossary Plugin - The Tooltip Glossary plugin revolutionizes content management by effortlessly creating an interactive glossary right within your WordPress site. Seamlessly define terms, enhance user experience, and optimize SEO with its powerful features.
StatusCake - Website Uptime Monitoring & Alerts – Free Unlimited Downtime Monitoring
Free SEO Checker by Spotibo - An SEO checker that analyses based on Google's algorithm 👀
Better Uptime - We call you when your website goes down
Curatedseotools.com - Curated directory of the best SEO tools.