Get PRTG Network Monitor Software Free. This software allows you to monitor network computers and devices including switches, routers, firewalls, database servers and more. It collects performance data from the remote machines and provides graphical statistics and detailed logs. You can easily configure different schedules and notification with support for notification messages via email, messenger, SMS, EventLog entry, file execution and more. It has more than 50 sensor types that allow you to monitor database responses, TCP/IP connectivity, common Internet protocols , HTTP content, WMI values, custom sensors and more. This free version has 30 sensors for personal and commercial use. Includes an optional trial of the Professional version.