RPi-Monitor is described as 'software designed to monitor the metrics from GNU/Linux system and connected peripherals. It store statistic into local Round Robin Database and embed a web server allowing to display current status and statistics' and is an app in the Network & Admin category. There are five alternatives to RPi-Monitor for Linux, Online / Web-based, Self-Hosted solutions, PHP and BSD. The best alternative is Webmin, which is both free and Open Source. Other great apps like RPi-Monitor are cPanel (Paid), Nagios (Freemium, Open Source), Ajenti (Free Personal, Open Source) and Cockpit Project (Free, Open Source).
Makes it easy to administer Linux servers via a web browser. It allows you to easily perform simple tasks like storage administration, inspecting journals, starting & stopping services, monitoring & administering several servers at once.