Track uptime, health, disk space, and performance 24/7
- Eliminate network strain and server bottlenecks
- Easily identify issues using a central dashboard
- Be notified with real-time alerts via SMS, email, and more
Free download
product overview
PRTG free server monitoring: What you will find on this page
- Why to choose PRTG for server monitoring
- What server monitoring looks like in PRTG
- Free server monitoring vs. licensed editions
- 3 more reasons why to use PRTG as your server monitoring tool
- Preconfigured PRTG sensors for server monitoring
- Server monitoring tools put to the test
- Monitor server availability: FAQ
PRTG makes server infrastructure monitoring as easy as it gets
Custom alerts and data visualization let you quicklyidentify and prevent hard disk health, server performance, and storage issues.
Free download
PRODUCT OVERVIEW
Why to choose PRTG for server monitoring
Server monitoring is our passion. And we always let you try it for free.
Server health monitoring
Paessler PRTG monitors every key health parameter of your servers, including hardware status, disk space, CPU load, and more. Get full control over all your physical & virtual servers and save time that you can use for other important tasks.
Web server monitoring
PRTG monitors your web servers and websites to make sure that your company’s web presence is always up & running. Our sensors keep a constant eye on the availability, traffic, and processes of your web pages.
Server availability
Server availability is business critical for every company. One small glitch can not only trigger a lot of complaints, but also affect your whole business & IT infrastructure. With PRTG, you can make sure that all servers are working as expected.
What all-in-one server monitoring looks like in PRTG
Diagnose network issuesby continuously tracking your servers. Show disk usage, server performance, downtime, and other key metrics in real time. Visualize monitoring data in clear graphs and dashboards to identify problems more easily. Gain the network visibility you need to troubleshoot issues with server functionality.
Device tree view of the complete monitoring setup
Custom PRTG dashboard for keeping an eye on the entire IT infrastructure
Live traffic data graph in PRTG
Start monitoring your server hardware with PRTG and see how it can make your network more reliable and your job easier.
Free server monitoring vs. licensed editions
Server monitoring freeware
- 100 sensors free for life (enough for basic server monitoring)
- For each device about 10 sensors required on average
- Alarm, mapping, and report features included
- Freeware edition sufficient for most small networks
PRTG licenses
- Flexible licenses with 500 to 10,000 sensors
- Monitor 50 to 1,000 devices or more
- Easily upgrade if more sensors are required
- Existing monitoring unchanged with upgrade
- Try full version free for 30 days
3 more reasons why to use PRTG as your server monitoring tool
Detect server hardware malfunctions at once
CPU errors, memory overloads, faulty network cards...it seems like something is always going wrong with server hardware. In reality, this is normal wear and tear, particularly if your IT infrastructure grows and incorporates more and more network devices that are not always produced by the same manufacturer. PRTG has got you covered – our server monitoring solution comes with preconfigured sensors for the most popular server hardware manufacturers.
Quickly eliminate server bottlenecks
Even brief traffic spikes can generate peak loads in your IT infrastructure, which can cause any part of the network to go down. Most of the time, it’s your switches, routers, or servers that take the hit. Thanks to our customizable dashboards and easy-to-read graphs, you can see at one glance where a bottleneck is about to occur and take immediate action to troubleshoot the issue – before something more critical happens.
Keep an eye on your virtual servers
Many companies use both physical and virtual servers. However, it’s not enough to only monitor your physical servers – you should also constantly monitor the health and performance of your virtual servers in addition to the host hardware that runs your virtual machines. PRTG comes with various preconfigured sensorsfrom different vendors for monitoring your virtual environment, for example, VMware, Citrix, or Microsoft Hyper-V.
Explore our preconfigured PRTG sensors for free server monitoring
PRTG comes with more than 250 native sensor types for monitoring your entire on-premises, cloud, and hybrid cloud environment out of the box. Check out some examples below!
SNMP HPE ProLiant Physical Disk
The SNMP HPE ProLiant Physical Disk sensor monitors a physical disk in an HPE ProLiant server. It can show the following:
- Number of hard and corrected read and write errors
- Disk status
- Drive condition
- Number of sectors read and written
- If the threshold is passed

SNMP IBM System X Physical Memory
The SNMP IBM System X Physical Memory sensor monitors the memory modules in an IBM server. It can show the following:
- Memory controller condition
- Power status

SNMP Cisco UCS Physical Disk
The SNMP Cisco UCS Physical Disk sensor monitors a physical disk of a Cisco Unified Computing System device. It can show the following:
- Operability status
- Connection status

Hyper-V Host Server
The Hyper-V Host Server sensor monitors a Microsoft Hyper-V host server via WMI or Windows performance counters. It can show the following:
- CPU usage of the hypervisor, the guests, and in total
- Network traffic
- Number of deposited pages
- Number of host health-critical values

See the PRTG Manual for a list of all available sensor types.
Find the root cause of the problem with our PRTG server monitoring solution
Real-time notifications mean faster troubleshooting so that you can act before more serious issues occur.
Free download
PRODUCT OVERVIEW
PRTG is compatible with all major vendors, products, and systems
Server monitoring tools put to the test: Prices, features, and more
These days, system administrators are spoiled for choice. The market is literally overflowing withmonitoring tools and each of these tools has its pros and cons. We’ve compared some of them with PRTG.
Nagios
Nagios is open-source software for network monitoring. Many of our customers used Nagios before switching to PRTG because it is free of charge.
Compared to PRTG, however, it is much more difficult to configure. PRTG also beats Nagios when it comes to the visual presentation of data. For a more detailed comparison, see: Nagios vs. PRTG.
SolarWinds
Like PRTG Network Monitor, SolarWinds NPM is proprietary network monitoring software that also monitors server hardware.
While one license of PRTG includes all monitoring features, however, you need different products from SolarWinds to monitor, for example, network traffic or application performance. For a more detailed comparison, see: SolarWinds vs. PRTG.
Zabbix
Zabbix is another free, open-source network monitoring tool that offers more visualization options than Nagios.
If you think about choosing between Zabbix and PRTG, always keep in mind the time that you'll need for extensive configuration work, which you won't need with our easy-to-use monitoring software PRTG. For a more detailed comparison, see:Zabbix vs. PRTG.
PRTG makes server infrastructure monitoring as easy as it gets
Custom alerts and data visualization let you quicklyidentify and prevent hard disk health, server performance, and storage issues.
Free download
PRODUCT OVERVIEW
“From a server perspective, we're monitoring all of the key components of our service such as CPU usage, RAM disk space, the Windows services that it's running, and network connectivity of that server. In terms of networks, we’re monitoring all of our switches, firewalls, and access points. It’s really useful to be able to easily pull performance metrics from the PRTG dashboard.”
Ollie Kerslake, Infrastructure Lead
Riverford Organic Farmers
“The tool has given us greater control over all types of devices connected to the network (switches, IP telephony, security cameras, IoT, WiFi) that previously remained opaque when dealing with service incidents. This has improved our ability to diagnose and resolve problems, which has translated into greater efficiency and a better user experience in both internal and public services.”
Jordi Tolosà Bel, New Technologies Technician
Vinaroz City Council
“Our objective was to be able to monitor the health of our most criticalservers containing data and applications, but also the flows and bandwidth between headquarters, our 50 servers in the cloud and the 15 servers at our production sites. For us, it is essential to have a proactive approach to understand where the weaknesses of the IT system are to be able to improve them.”
Marc Boullier, CIO
Carambar & Co
Your server monitoring software at a glance – even on the go
Set up PRTG in minutes and use it on almost any mobile device.


We are an HPE Technology Partner
Hewlett Packard Enterprises and Paessler are collaborating in a fresh new way to bring increased value to you as our customer.
What does this mean for you?
- Easy integration of HPE hardware and software with PRTG
- State-of-the-art features for monitoring your HPE environment
- Expert technical support around your HPE monitoring setup
Create innovative solutions with Paessler’s IT partners
Partnering with innovative IT vendors, Paessler unleashes synergiesto create
new and additional benefits for joined customers.

IP Fabric
Combining PRTG’s broad monitoring feature set with IP Fabric’s automated network assurance creates a new level of network visibility and reliability.
Read more

Plixer
Paessler and Plixer provide a complete solution adding flow and metadata analysis to a powerful network monitoring tool.
Read more

baramundi
baramundi and PRTG create a secure, reliable and powerful IT infrastructure where you have everything under control - from the traffic in your firewall to the configuration of your clients.
Read more
Find the root cause of the problem with our PRTG server monitoring solution
Real-time notifications mean faster troubleshooting so that you can act before more serious issues occur.
Free download
PRODUCT OVERVIEW
Paessler PRTG
Network Monitoring Software – Version 24.4.102.1351 (November 12th, 2024)
Hosting
Download for Windows and cloud-based version PRTG Hosted Monitor available
Languages
English, German, Spanish, French, Portuguese, Dutch, Russian, Japanese, and Simplified Chinese
Monitor everything
Network devices, bandwidth, servers, applications, virtual environments, remote systems, IoT, and more
Pricing
Choose the PRTG Network Monitor subscription that's best for you
Discover beyond free server monitoring

Solutions for all your monitoring needs
- Free Syslog Server
- Server monitoring
- PRTG Network Monitor: All-in-One Network Monitoring Software

Powerful stories from the monitoring world
- Free checklist to find the right network monitoring solution
- Examples of IT Scenarios You Can Monitor with PRTG 100 for Free

Resources to master your monitoring challenges
- Change WMI "free memory %""used memory"
- How can I remotely monitor the free disk space on an PHP enabled server with PRTG?
- It is possible having two PRTG 100 free sensor servers inside a network?
Monitor server availability: FAQ
What types of servers can PRTG monitor?
PRTG can monitor various types of servers including web servers, SQL servers, file servers, mail servers, and virtual servers across different platforms such as Windows, Linux, and macOS.
Can PRTG monitor cloud-based servers?
Yes, PRTG can monitor servers hosted on cloud platforms such as Amazon AWS, Microsoft Azure, and Google Cloud. This includes virtual machines, cloud storage, and other cloud services.
How does PRTG monitor server uptime?
PRTG uses sensors that can ping servers, track response times, and utilize protocols such as HTTP, SSH, SNMP, WMI, and others to ensure servers are responding correctly. If a server doesn’t respond when pinged, PRTG immediately sends an alert to the administrator.
Can PRTG predict server failures?
PRTG can help predict server failures by monitoring trends and performance metrics like CPU load, memory usage, and disk space. If these metrics show unusual patterns, it could indicate a potential issue, allowing administrators to intervene before an actual failure occurs.
What’s included in the free edition of PRTG?
With our free network monitoring tool, you get:
- A freeware monitoring solution for up to 100 sensors for life
- Monitoring of hardware, software, network performance, data traffic included
- Free alerting, reporting, ticketing, and network mapping features
With the freeware edition of PRTG, you can get started with network monitoring in a matter of minutes. Our auto-discovery function detects all network devices within a given IP address range and automatically incorporates them into your monitoring environment.
What is a sensor in PRTG?
In PRTG, “sensors” are thebasic monitoring elements. One sensor usually monitorsone measured value in your network, for example the traffic of a switch port, the CPU load of a server, or the free space on a disk drive. On average, you need about5-10 sensors per deviceor one sensor per switch port.
We asked: would you recommend PRTG? Over 95% of our customers say yes!
Paessler conducted trials in over 600 IT departments worldwide to tune its network monitoring software closer to the needs of sysadmins. The result of the survey:over 95% of the participants would recommend PRTG – or already have.
Still not convinced?
More than 500,000 sysadmins love PRTG
Paessler PRTG is used by companies of all sizes. Sysadmins love PRTG because it makes their job a whole lot easier.
Monitor your entire IT infrastructure
Bandwidth, servers, virtual environments, websites, VoIP services – PRTG keeps an eye on your entire network.
Try Paessler PRTG for free
Everyone has different monitoring needs. That’s why we let you try PRTG for free.
Start monitoring your server hardware with PRTG and see how it can make your network more reliable and your job easier.
Free download
PRODUCT OVERVIEW