Mattermark in Salesforce AppExchange - Automatically enrich leads in Salesforce with Mattermark
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.
Proof - Website conversion rate optimization and visitor monitoring
StatusCake - Website Uptime Monitoring & Alerts – Free Unlimited Downtime Monitoring
Drift + Salesforce Integration - Create and track leads from Drift in Salesforce
Better Uptime - We call you when your website goes down