iotlist - Discover the internet of things
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.
Airtable - Airtable works like a spreadsheet but gives you the power of a database to organize anything. Sign up for free.
StatusCake - Website Uptime Monitoring & Alerts – Free Unlimited Downtime Monitoring
Fieldbook - Create a database, as easily as a spreadsheet
Better Uptime - We call you when your website goes down