Custom alerts and data visualization let you quickly identify and prevent all kinds of network issues.
You're in charge of a large enterprise network with many moving parts?
What if we told you, you could keep a close eye on every single performance metric and network component? Routers, firewalls, servers, iOS and Android devices, application performance, uptime, virtualized environments, and even SaaS vendors and other service providers’ compliance with SLAs. All from one pane of glass?
And that you could be up and running in a matter of minutes, without endless manual tweaking and PhD-worthy configuration setups?
That’s the power of Paessler PRTG.
Preconfigured sensors and smart automations map out your network fast, no matter how complex it is. And the intuitive interface makes it easy to find your way around and customize everything to suit.
Don’t believe network monitoring software could be this user-friendly? Try it for free, no strings, and see for yourself.
That's how easy it is to set up your monitoring infrastructure.
Once you download and install it, our network monitoring solution automatically assigns the right sensors and starts monitoring almost instantly, giving you unparalleled observability and control over your network’s health and performance.
Quick installation with automatic network discovery and smart setup for instant monitoring
Custom dashboard creation via drag & drop with easy-to-read visualized overviews
Different user interfaces for web, desktop, and mobile apps for monitoring on the go
Network of qualified implementation partners to support you with a smooth migration to PRTG
Diagnose network issues by continuously tracking the health, availability, and performance of your entire IT infrastructure. Show hardware parameters, application performance, network traffic, bandwidth usage, and other key metrics in real time. Visualize data in clear graphs and dashboards to identify problems more easily. Gain the overview you need to troubleshoot all kinds of issues in your network.
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
FEATURE | PRTG PRTG | OpenNMS OpenNMS |
|---|---|---|
One tool for your entire network | PRTG All monitoring features included | OpenNMS Available features depend on which plan you're on |
Easy setup, intuitive monitoring | PRTG User-friendly interfaces for web, desktop, and mobile | OpenNMS Requires manual configuration |
Automatic network discover | PRTG Included | OpenNMS Requires manual configuration |
Real-time alerts & notifications | PRTG Advanced, highly customizable alerting via different notification methods | OpenNMS Customizable alerts and integrations |
Custom maps & dashboards | PRTG Custom dashboard creation via drag & drop | OpenNMS Not available |
Agentless monitoring | PRTG No need to install agents on the monitored systems | OpenNMS Supported |
On-premises or cloud-based | PRTG Flexible deployment options available | OpenNMS Different options available |
Enterprise version | PRTG Available | OpenNMS Available |
Freeware version | PRTG Available for up to 100 sensors, free for life | OpenNMS Available |
Distributed network monitoring | PRTG Monitoring an unlimited number of remote locations included | OpenNMS Supported |
Server & application monitoring | PRTG Out-of-the-box integration, no extra cost | OpenNMS Supported |
Network performance monitoring | PRTG Out-of-the-box integration, no extra cost | OpenNMS Supported |
Bandwidth monitoring | PRTG Out-of-the-box integration, no extra cost | OpenNMS Supported |
Network traffic analyzer | PRTG Out-of-the-box integration, no extra costs | OpenNMS Supported |
Cloud services monitoring | PRTG Out-of-the-box integration, no extra cost | OpenNMS Supported |
Virtual infrastructure monitoring | PRTG Out-of-the-box integration, no extra cost | OpenNMS Supported |
Storage resource monitoring | PRTG Out-of-the-box integration, no extra cost | OpenNMS Supported |
Database monitoring | PRTG Out-of-the-box integration, no extra cost | OpenNMS Supported |
Web performance monitoring | PRTG Out-of-the-box integration, no extra cost | OpenNMS Supported |
Supports leading technologies | PRTG SNMP, flow protocols, packet sniffing, WMI, HTTP, ping, SQL, and much more | OpenNMS Supported |
Create your own scripts | PRTG Own PRTG API included for custom sensors and scripts | OpenNMS Supported |
Includes technical support | PRTG Expert support included, no extra costs | OpenNMS Only on paid subscriptions |
“All-around winning
network monitor”
“The real beauty of PRTG is the endless possibilities it offers”
“PRTG Network Monitor
is very hard to beat”
Set it and forget it, or take full advantage of our network monitoring and management solution’s extensive customization features, including customizable dashboards, workflows, performance thresholds, and automations.
Whatever your needs are, and however they change over time, PRTG adapts intuitively and cost-effectively.
And isn’t that what every IT professional wants?
We really mean that. Auto-Discovery does all the work. Key in an IP address range, and PRTG will build out your monitoring environment, assign the right sensors, and start gathering performance data. Better still, it alerts you if there are issues, so you can proactively address them before they cause disruption. How’s that for comprehensive monitoring?
Forget about Minion appliances, database clusters, and other resource-heavy plugins or components. PRTG’s system of remote probes enable it to consistently and accurately track key metrics in even the most complex distributed networks, without increasing your infrastructural overhead to unsustainable levels.
No paid add-ons, extras, or topups. You can access all of PRTG’s key features and functionalities regardless of which plan you’re on — yes, even if you’re using the free version. Which means you can build a robust monitoring environment even if you have limited resources and scale as your network (and budget) expands.
Always know exactly how much your bill will come to. PRTG charges per bundle of sensors, so you pay for the performance metrics you need to monitor, not to access specific functionalities. That means our network monitoring platform is more cost-effective than other alternatives. And, more importantly, we’ll never slap you with charges you weren’t expecting.
You are interested to know if PRTG could be an alternative to your OpenNMS implementation?
PRTG is set up in a matter of minutes and can be used on a wide variety of mobile devices.
We also compared PRTG with other monitoring tools:
ScienceLogic is powerful but has a steep learning curve and high cost. PRTG offers easy setup, flexibility, and transparent pricing as a budget-friendly alternative.
The basic version of the open-source tool Nagios is free of charge. But most users spent many hours to set up and customize the tool. In case of problems, browsing through forums is often the only solution.
Zabbix is open-source software with a strong community support. But it requires lots of manual configuration work to install and set it up. You also need to install agents on the monitored systems.
Checkmk is a comprehensive network monitoring tool, but it uses open-source add-ons for some functions. This means additional work in setting up, operating, and maintaining the monitoring systems.
Real-time notifications mean faster troubleshooting so that you can act before more serious issues occur.
Partnering with innovative IT vendors, Paessler unleashes synergies to create
new and additional benefits for joined customers.
Paessler and Plixer provide a complete solution adding flow and metadata analysis to a powerful network monitoring tool.
Rhebo and PRTG offer a comprehensive monitoring solution for IT and OT environments: from condition monitoring through to anomaly and threat detection.
UVexplorer integrates tightly with PRTG to bring fast and accurate network discovery, detailed device inventory, and automatic network mapping to the PRTG platform.
Network Monitoring Software – Version 25.2.106.1114 (May 05th, 2025)
Download for Windows and cloud-based version PRTG Hosted Monitor available
English, German, Spanish, French, Portuguese, Dutch, Russian, Japanese, and Simplified Chinese
Network devices, bandwidth, servers, applications, virtual environments, remote systems, IoT, and more
Choose the PRTG Network Monitor subscription that's best for you
Choosing between Paessler PRTG and OpenNMS depends on several factors, such as your specific network monitoring needs, budget, and technical resources available in your organization.
PRTG is ideal:
OpenNMS might be your choice:
PRTG, no contest, for one simple reason: it works out of the box, with minimal manual intervention. That means no XML edits, PostgreSQL tuning, or other complex setup requirements. Key in an IP address range, and PRTG will discover every device on the network, assign the right sensors, and start monitoring straight away.
Of course, more complex setups — distributed networks, for instance — or customization will require some tweaking. But we're confident this is a quick and intuitive process. And, if you run into issues, our friendly (and human) support team is always on hand to help. Even if you're on a free plan.
While OpenNMS has comprehensive cloud-monitoring capabilities, PRTG makes the process simpler and far more intuitive. And here's why:
● Native integrations with AWS, Microsoft Azure, Google Cloud, and other major cloud environment providers
● Automatic alerts and custom visualizations you can set up without having to write a single line of code
● Unlimited support for distributed monitoring via resource-light remote probes
In comparison, OpenNMS requires CLI, XML, and database optimization, resource-heavy appliances, and other headache-inducing manual adjustments.
Yes, OpenNMS has a free version. But, unlike PRTG, it has limited functionality and only community-based support. PRTG's free version, on the other hand, comes with all features included. Yes, including enterprise functionality. Which means you can get started with IT infrastructure monitoring at no cost.
PRTG's paid plans are more straightforward, too.
PRTG uses sensor-based pricing. In other words, you pay for the number of sensors you need, not to access specific features. By contrast OpenNMS' pricing depends on the size of your infrastructure and your support requirements, plus component-based costs and fees for other add-ons.
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.
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.
You are interested to know if PRTG could be an alternative to your OpenNMS implementation?
