Zabbix is a network monitoring application that lets you stay on top of all your network activities. The app is very scalable and can work on networks of any size, from a home network with a couple of computers to an enterprise with dozens. It’s cross-platform and will keep track of machines running Linux, Windows, or Mac OS X. You can use it to keep a close eye on every aspect of these machines. You can ask Zabbix to report on several aspects including free disk space, CPU load, network traffic statistics, memory consumption, application status, and much more.