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.
Returnloads.net on the go - Find freight loads and empty vehicles on the go with the Returnloads.net app.
StatusCake - Website Uptime Monitoring & Alerts – Free Unlimited Downtime Monitoring
Convoy - Local and regional trucking on demand
Better Uptime - We call you when your website goes down
Freight Pal - This app is also installable on FireFox OS mobile phones.