WebGazer is an uptime monitoring platform that checks if your website is up as it should be and notifies you if anything goes wrong
Hexospark - Email automation + CRM designed to spark conversations.
UptimeRobot - Free Website Uptime Monitoring
Spark Mail - Spark helps you take your inbox under control. Instantly see what’s important and quickly clean up the rest. Spark for Teams allows you to create, discuss, and share email with your colleagues
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.
Salesflare - Simply powerful CRM. Automates your data to build better relationships and make more sales.
StatusCake - Website Uptime Monitoring & Alerts – Free Unlimited Downtime Monitoring