All-In-One Uptime Monitoring
with PRTG Network Monitor

  • Check the uptime of all your servers: FTP server, mail server, DNS server, SQL server, virtual servers
  • PRTG monitors your website availability
  • Determine causes of crashes
  • PRTG offers a comprehensive report system including statistics, charts, and much more  


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100 sensors, perfect for smaller networks



The term "uptime" is used in IT to define the period of time in which a computer system is functional and available. When referring to a network, uptime is defined in terms of the availability and reliability of servers and devices, or by domain and website availability. Most of the time, availability is displayed as a percentage. An availability of 90% measured over the course of a day means the system was functional and available for exactly 1296 minutes (21.6 hours) on that particular day. Find out more about downtime here






Cost-free start up

The basic version of PRTG is free, with 100 free sensors which never expire. During the first 30 days, you can even enjoy the full version with its unlimited number of sensors to get a better idea of how PRTG works. Take our network monitoring tool for a trial run and find out how you can use it monitor your uptime to prevent costly downtime.

One-stop monitoring

Many companies monitor using a number of disparate solutions. Couple this with all of the other in-house IT duties and you have a recipe for confusion and at times, disaster. But with PRTG, you get one central, comprehensive monitoring tool for ALL of your monitoring. PRTG is simple to set up, requires little bandwidth, and makes your day-to-day work easier.

Get straight to the causes

With PRTG, you'll enjoy a comprehensive view of your entire IT infrastructure. It not only keeps track of your uptime and downtime, but can also determine the causes of crashes. What is really behind the crash? The hardware, network connection, or a faulty configuration? Thanks to PRTG, you'll save time when troubleshooting.

Prompt notifications

A customizable notification system quickly sends off an alert so you can fix bugs before more serious problems arise. Don't wait to put out the fire, stop the fire starting!

Comprehensive reports

PRTG boasts a comprehensive report system with statistics, charts, and much more. Create customized reports and have them sent to your superiors automatically. Use these reports to see how and where you are saving resources.

Perfectly compatible

PRTG offers monitoring sensors - predefined measuring points - for practically every major device manufacturer, including Cisco, Dell, and HP.

Greater predictabilty

Comprehensive monitoring allows you to take total control. Take advantage of a reliable database to optimize load distribution or plan the expansion of your network.


Your goal: 


When it comes to uptime, only one percentage will do: 99.999! These "5 nines" are the badge of your network's high level of availability. PRTG can help you reach this ambitious goal. On this page, you'll discover the advantages of uptime monitoring with PRTG, the sensors we provide, and a few of our tips on network monitoring! 





Are you thinking about monitoring your uptime and downtime? Would you like to take a closer look at PRTG? Please do! Check out our LIVE DEMO. No registration or installation is required!




With PRTG, you can check the uptime of all your servers. Whether a FTP server, mail server, DNS server, SQL server, or virtual servers such as VMware or Hyper-V, PRTG keeps track of everything. CPU load, memory, bandwidth, and many other parameters are monitored by default. For more information, see our page on the availability of your servers.



When coworkers complain about their devices malfunctioning, many administrators embark upon a time-consuming search for the culprit. Is the bug in the network or in the user's device? With PRTG, you can check the functions of each individual device - whether it be a desktop computer, router, switch, or another network component. For more information, visit our page on hardware monitoring with PRTG



For many companies, website availability is an important factor in their sales performance. Every second a company is offline is a second when customers are unable to browse products or place orders. With PRTG, you'll not only monitor availability, speed, and database performance, but also the individual content of your website. When it comes to domain availability, the issues are often the same.


Quote Andreas Reimann

“The support we received from Paessler AG was extremely reassuring. Their reaction time, know-how, and solutions were outstanding in every department.”

Andreas Reimann, Senior Networking Communication Architect at Zürich Airport. Zürich Airport uses more than 4,500 sensors for its monitoring. To the case study


150,000 administrators worldwide trust in our software.
Every day.


PRTG simplifies your day

Our network monitoring software immediately lets you know if there are issues with your uptime.
PRTG lets you concentrate on your day-to-day tasks with peace of mind.



With PRTG, you get one central monitoring tool for checking the uptime and downtime of your network. Our dashboard provides a quick overview at all times - whether on your desktop or as an app.


PRTG saves stress

Setting up PRTG is quick and easy. There are numerous sensors available for your uptime monitoring. With 200+ predefined sensors, you'll have no trouble detecting the causes of your downtime.



80% of our customers report substantial or even exceptional cost savings in the area of printer monitoring. The experience of our customers shows that the costs for licenses have paid for themselves in an average of 3 ½ months.


PRTG can be installed within minutes and it's compatible with many mobile devices.





Ping Sensor: The easiest way to check the uptime or availability of your network is by using a Ping sensor. Find out more about the Ping sensor in the PRTG manual.

SNMP System Uptime Sensor: This predefined sensor will enable you to monitor uptime via SNMP and see how long a device has been running without interruption. SNMP uses little bandwidth and CPU and is therefore an ideal monitoring solution. Read more about the SNMP System Uptime Sensor.

Windows System Uptime Sensor: With this sensor, you can monitor uptime via Windows Performance Counters or WMI (Windows Management Instrumentation) and see how long a Windows-based computer has been running without interruption. For more information, check out the Windows System Uptime Sensor. While this sensor is well-suited for Windows devices, it tends to have a greater effect on your system's performance than SNMP.

Other sensors: Our PRTG sensor list contains more than 200 predefined sensors. Sensors for servers, bandwidth, applications...the selection is vast and constantly being updated by the PAESSLER team.

Use our Smart Setup! PRTG automatically begins creating sensors right from the time it is being installed. By pinging a private IP range, PRTG lets you get started with uptime monitoring simply by opening the monitoring tool for the first time.


Quote Arne Seifert

Practical tip: “Hey Arne, what would you tell administrators looking to use PRTG to monitor the uptime of their networks?”

“For sensor lists and reports, PRTG immediately sorts between uptime and downtime. Usually, the ping downtime sensor is all you’ll need to get a quick overview of what’s going on. Simply enter “pingsensor” and right away you’ll see where most of the problems in your network lie.”

Arne Seifert works in the Paessler AG support department. 


Award winning solution

We work hard on making our software as powerful and easy-to-use
as possible for our customers each and every day.
Of course it makes us proud when we get awards for that.



Over 95% of our customers recommend PRTG

Paessler AG worldwide trialled PRTG in over 600 IT departments. The aim was to tune the network monitoring software closer to the needs of the administrators.

The result of the survey: over 95% of the participants would recommend PRTG - or already had.


The Swiss Army knife for admins


Adapt PRTG individually and dynamically, to your specific needs, using the API:

  • HTTP API: Access monitoring data and manipulate monitoring objects using HTTP requests
  • Custom Sensors: Create your own sensors for customized monitoring
  • Custom Notifications: Create your own notifications to send alarms to external systems


Many administrators try several different monitoring tools to get an idea of what's out there. PRTG is often the tool of choice because it comes with a number of advantages:

All-inclusive: Our motto is "All-inclusive, no extra costs!" Alarm feature, reports, support... everything is included in one package. There are no hidden fees. With PRTG, the purchase price is the final price.

Easily upgradeable: You automatically get the first 100 sensors for free. These sensors will help you to get a good feel for PRTG, and come with no strings attached. Should you ever wish to try more comprehensive monitoring, PRTG is individually upgradeable. We've developed a flexible licensing model precisely for this purpose.

Save money: Thanks to PRTG's easy setup, high degree of reliability, user-friendliness, and early warning system, administrators save time, worry, and money in the long run. And its purchase price often pays for itself in no time at all. 



PRTG has been a top performer in trade magazine tests for many years now. Behind this success lies a dedicated team that has been conducting network monitoring since 1997. Its founder is Dirk Paessler, who still runs the company today. PESSLER AG's headquarters are located in the city of Nuremberg, in the heart of Germany. Every day we get closer to making our software the perfect monitoring tool.


Download Network Monitoring Software for Windows - Version (March 28th, 2017)
Languages English, German, Spanish, French, Portuguese, Dutch, Czech, Russian, Japanese, and Simplified Chinese
Pricing Free for up to 100 sensors (Price List)
Unified Monitoring Network devices, bandwidth, servers, applications, virtual environments, remote systems, IoT, and more...

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