REST Custom Sensor: This sensor monitors the availability of RESTful APIs, recognizes the content of XML an JSON files automatically and creates suitable channels for values.Windows Process Sensor: This sensor monitors a Windows process using performance counters or WMI.Notice when your domains or SSL certificates are about to expire. Stay transparent to your clients by displaying your service status. Monitor your server's resources, and get alerts on high usage.

WMI Custom Sensor: This sensor uses WMI to execute an individual WQL query and monitors the subsequent return value. EMCO Ping Monitor is a freeware ping-monitoring tool that checks the hosts availability and the connection quality and sends notifications on the host. Our platform can help you: Notice as soon as your websites or servers go down.PerfCounter Custom Sensor: This sensor monitors an individually-compiled set of Windows performance counters.WMI Security Center Sensor: This sensor monitors any product which can be inspected by the Windows Security Center.Event Log (Windows API) Sensor: This sensor uses the Windows Application Programming Interface (API).

WMI Event Log Sensor: This sensor reads the Windows Event Log and provides easy-to-read visuals of the data.

We also offer a number of useful sensors which you can customize yourself. PRTG comes with predefined sensors for monitoring conventional parameters such as CPU, memory, and the network card.

Internet uptime monitor freeware