The free online uptime monitoring service with an App is available for iOS and Android.
With the Free Plan, you can monitor up to 50 URLs, check for a website's content (using the keyword monitor), ping your server or monitor your ports in 5-minute intervals. You can create a status page to showcase your uptime. SMS or Call alerts can be bought anytime.
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OpManager the network monitoring software used by over 1 million IT admins
Network performance monitoring, uncomplicated.
ManageEngine OpManager is a powerful network monitoring software that provides deep visibility into the performance of your routers, switches, firewalls, load balancers, wireless LAN controllers, servers, VMs, printers, and storage devices. It is an easy-to-use and affordable network monitoring solution that allows you to drill down to the root cause of an issue and eliminate it.
A free open sourced Apache Http Server GUI developed with Java.
...The solution is designed to be compatible with modern Windows and IX operating systems.
Source code for this project is hosted on github https://github.com/jrossi227/ApacheGUI