Mac Address Lookup - A web application and REST API to find a vendor name by mac address.
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.
MAC Vendors - Find MAC Address Vendors
StatusCake - Website Uptime Monitoring & Alerts – Free Unlimited Downtime Monitoring
Wireshark - Wireshark is a network protocol analyzer for Unix and Windows. It lets you capture and interactively browse the traffic running on a computer network.
Better Uptime - We call you when your website goes down