Paessler PRTG

Start small & monitor your bandwidth for free with PRTG

  • Includes 100 PRTG sensors for free that never expire
  • Bandwidth monitoring with ping, SNMP, and packet sniffing
  • Reliable network monitoring for your entire IT infrastructure

Our users give top ratings for monitoring with Paessler PRTG



PRTG makes bandwidth monitoring for free easy

Custom alerts and data visualization make it easy to monitor, identify, and prevent network congestion and performance issues.



Start small for free – no matter the environment size

Large & enterprise networks

As a sysadmin of a large network, you may face issues of budgeting or management approval to get bandwidth monitoring tools. However, Paessler PRTG makes your job easy.

It comes with 100 free sensors to quickly prove the worth of bandwidth monitoring, plus it offers flexible, scalable licenses and subscriptions that let you buy according to need. This way, you can convince management without putting pressure on your budget.


Small to medium networks

If you work for a small to medium-sized company, you may worry about the cost of PRTG to monitor routers, switches, and workstations.

If you have a small to medium-sized network, PRTG can serve as a free bandwidth monitoring tool. The first 100 sensors are free and never expire, which may be all you need for reliable bandwidth and network monitoring.



Home networks and labs

As a sysadmin, you may have a small home network that you like to outfit with professional hardware. But you likely want to spend as little money as possible on your bandwidth or network monitoring.

PRTG works great for use on home networks to get a feel for the software, and the free 100-sensor edition should suffice.








What’s included in the free edition of PRTG?

Free network monitoring with 100 free sensors

The Freeware edition of PRTG includes 100 sensors free for life. This means you can immediately start monitoring your entire IT infrastructure, including bandwidth, hardware, software, network performance, data traffic, and more. 



Free alerts, reports, network mapping & more

PRTG’s free edition includes all essential features: alerting & notifications, reports, visualization, and more. Plus, setup is quick and easy with PRTG’s automatic network discovery. It detects all devices within a given IP address range and automatically integrates them into your monitoring setup.



Flexible licensing & transparent pricing

Need to monitor more? Our simple, scalable licensing lets you buy according to need. On top of the 100 free sensors, you can upgrade to several thousand or even unlimited sensors. For professional network monitoring, you’ll need around 10 sensors for each device.






Easily find the source of the problem with our free PRTG bandwidth monitor solution

Real-time alerts and custom notifications make it easy to solve issues with bandwidth bottlenecks and overall network performance.









What network bandwidth monitoring looks like in PRTG

Diagnose network issues by continuously monitoring network traffic, bandwidth, and overall performance. Show data traffic and bandwidth utilization in real time and visualize data in graphic maps & dashboards to identify problems more easily. Gain the visibility you need to troubleshoot network congestions and bandwidth bottlenecks.



IT experts agree: Paessler PRTG is a great solution for IT infrastructure monitoring


“All-around winning
network monitor”

logo it brief

“The real beauty of PRTG is the endless possibilities it offers”


“PRTG Network Monitor
is very hard to beat”


How to set up PRTG free bandwidth monitoring with 100 sensors



3 tips for setting up PRTG monitoring



Start big

The PRTG Auto-Discovery function is launched upon installation. It searches for available devices within a certain range of IP addresses and sets up an initial monitoring environment. This facilitates the configuration and maintenance of your monitoring.




Narrow down

With the 100-sensor edition of PRTG, you’ll have to delete most of the sensors created by the automatic network discovery. For basic monitoring, use most of your sensors for essential servers, routers, and switches.


Get free bandwidth monitoring

Want to focus on bandwidth monitoring? Then utilize essential, preconfigured sensors as shown below.










3 preconfigured sensors for bandwidth monitoring with PRTG


Ping v2

The Ping v2 sensor monitors the overall availability of your network devices and promptly notifies you in the event of malfunctions. Ping monitoring is a fundamental part of bandwidth monitoring, for if a device is unavailable, then traffic cannot pass through it.

SNMP Traffic

Create an SNMP Traffic sensor for your most important devices. You’ll see how much traffic is flowing through your network and which applications and servers are putting the greatest strain on your bandwidth using SNMP as the technology of your choice.


Packet Sniffer

The  Packet Sniffer sensor is ideal for in-depth bandwidth monitoring. It lets you analyze the headers of data packets and filter traffic by IP address, protocol, data type, and more. This way, you can get a precise look at which devices and data are using the most bandwidth using packet sniffing.


Start free network bandwidth monitoring with PRTG and see how it can make your network more reliable and your job easier.


PRTG is compatible with all major vendors, products, and systems

vendors applications blue


3 business reasons for choosing PRTG

An investment that pays off

Your investment in PRTG usually pays for itself in weeks. The benefit of preventing costly crashes, support inquiries, and ineffective network management means a quick boost to your ROI. With PRTG, you’ll often eliminate these costs entirely.



Peace of mind & productivity

When your IT infrastructure is down, your support hotline can quickly become overloaded. Your coworkers become annoyed because they are no longer able to work, and frustration reigns. PRTG contributes to a stress-free workplace by allowing you to prevent crashes and downtime.



Long-term efficiency

Save money and boost efficiency by planning ahead. PRTG performs long-term network monitoring so you can plan for the future instead of reacting to a crisis. Stop playing catch-up, and use PRTG to plan your resources with vision and efficiency.




Your free network bandwidth monitor at a glance – even on the go

Set up PRTG in minutes and use it on almost any mobile device.


PRTG comes with all the features you need, plus more your IT infrastructure won't want to live without.



PRTG monitors these vendors and applications in one view!


vendors vm ware



Create innovative solutions with Paessler’s partners

Partnering with innovative vendors, Paessler unleashes synergies to create
new and additional benefits for joined customers.


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


Combining their tools to a powerful solution for advanced analysis and automation, KnowledgeRiver and Paessler enable IT teams to ensure best performance for their infrastructure and networks.

Read more


Siemon and Paessler bring together intelligent building technology and advanced monitoring and make your vision of intelligent buildings and data centers become reality.

Read more


PRTG makes UPS & PDU monitoring easy

Custom alerts and data visualization make it easy to monitor, identify, and prevent power supply issues.


Monitor bandwidth: FAQ


What is bandwidth?

Bandwidth is measured as the amount of data that can be transferred from one point to another within a network in a specific amount of time. Typically, bandwidth is expressed as a bitrate and measured in bits per second (bps). It refers to the transmission capacity of a connection and is an important factor when determining the quality and speed of a network.

What is bandwidth monitoring?

Bandwidth monitoring is the process of tracking and analyzing the amount of data transmitted over a network connection within a specific period. It helps administrators understand the usage patterns, identify potential bottlenecks, and optimize network performance. By monitoring bandwidth usage, organizations can allocate resources effectively, detect unusual activity or unauthorized usage, and plan for capacity upgrades as needed.

Is PRTG for free?

No, PRTG is proprietary network monitoring software by Paessler AG for which you need to own a commercial license if you want to monitor your business network. However, for small networks, PRTG offers a Freeware edition that comes with 100 sensors free of charge and includes important features like alerting, reporting, and network mapping.

Can PRTG only monitor bandwidth?

No, PRTG can monitor your entire IT infrastructure, including:

  • CPU and memory monitoring: It’s a good idea to monitor your hardware’s CPU usage, memory, and storage, since bottlenecks can creep up and cause devices to overload. With PRTG, you’ll be alerted before your devices crash so you can quickly see if their capacity limits have been exceeded.
  • Website monitoring: How stable is your website? Does it load quickly? Is it accessible by users all over the world? Do errors occur during the order process? PRTG comes with sensors that will answer these questions and more. If your website has a high volume of customer traffic, then monitoring is a must.
  • Cloud monitoring: You definitely need PRTG if you use worldwide cloud services, including email, virtual machines, and SaaS solutions. PRTG monitors the availability of each of these services.
  • QoS monitoring: Interrupted video calls? VoIP down yet again? Monitor your quality of service with PRTG to quickly identify loopholes and prevent emergencies before they occur.
  • File monitoring: Log files, event logs, file servers—PRTG monitors each and every file in your network. It even lets you monitor individual files, as well as folders and file contents.
  • And much more

What is a sensor in PRTG?

In PRTG, “sensors” are the basic monitoring elements. One sensor usually monitors one 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 about 5-10 sensors per device or one sensor per switch port.


PRTG the multi-tool

PRTG: The multi-tool for sysadmins

Adapt PRTG individually and dynamically to your needs and rely on a strong API:

  • HTTP API: Access monitoring data and manipulate monitoring objects via HTTP requests
  • Custom sensors: Create your own PRTG sensors for customized monitoring
  • Custom notifications: Create your own notifications and send action triggers to external systems
  • REST Custom sensor: Monitor almost everything that provides data in XML or JSON format


More than just a monitoring tool:
Reasons our customers love PRTG



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.



Paessler PRTG 

Start free network bandwidth monitoring with PRTG and see how it can make your network more reliable and your job easier.




Network Monitoring Software - Version (June 13th, 2024)


Download for Windows and cloud-based version PRTG Hosted Monitor available


English, German, Spanish, French, Portuguese, Dutch, Russian, Japanese, and Simplified Chinese


Up to 100 sensors for free (Price List)

Unified Monitoring

Network devices, bandwidth, servers, applications, virtual environments, remote systems, IoT, and more

Supported Vendors & Applications

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