Free Network Diagnostics and Analysis Tool PRTG
Speed up troubleshooting your network infrastructure
- Analyze all network devices, including servers, routers, and firewalls, with one tool
- Get alerted proactively via custom notifications – at the first sign of a problem
- Use historical data reports for detailed root cause analysis
Our users give top ratings for monitoring with Paessler PRTG
PRTG network analyzer: What you’ll find on this page
PRTG makes spotting and troubleshooting network issues as easy as it gets
Custom alerts and end-to-end data visualization let you quickly identify and prevent downtime, potential security threats, and network performance issues.
Goodbye needles. Goodbye haystacks.
Nobody enjoys working out what's causing network issues.
It can take hours. If you're lucky.
More likely, you might be looking at several days' worth of combing through logs to pinpoint what's wrong…
Powerful, accurate, and easy to implement, Paessler PRTG network troubleshooting tools take the pain out of identifying and fixing network problems, making it a simple and straightforward process.
Our network diagnostics software continuously monitors your network and homes in on any issues, so you can troubleshoot them quickly and bring your network back to 100% efficiency in no time.
PRTG network analysis & monitoring tool: From “No!” to “Go!” in minutes, not hours
Enjoy comprehensive monitoring
No network's too large or complex for PRTG. With 250+ preconfigured sensors and an intuitive, highly customizable dashboard, you can spot trouble and work out whether it's a hardware, software, or system issue with a few clicks.
Analyze
historical data
Go back as far as you need to, and home in on when the problem started. You can also generate custom reports you can use to get your higher-ups up to speed with the current state of your infrastructure… and let them know it's time to upgrade.
Receive automatic alerts
Prevention's better than cure. PRTG's configurable alerts notify you at the first sign of a possible problem, so you can take prompt action (and look good with your colleagues and your boss). Choose from various notification methods like email, SMS, or push notification.
Get outstanding support
Paessler's friendly support team is always on hand to help. We answer most queries within 24 hours. And our products come with extensive, easy-to-understand documentation, including the Paessler Knowledge Base, detailed how-tos, and video tutorials.
Start network management and diagnosis with PRTG and see how it can make your network more reliable and your job easier.
IT experts agree: Paessler PRTG is a great solution for IT infrastructure monitoring
“All-around winning
network monitor”
“The real beauty of PRTG is the endless possibilities it offers”
“PRTG Network Monitor
is very hard to beat”
What network troubleshooting looks like in PRTG
Diagnose network issues by continuously tracking hardware, applications, network configurations, Ethernet and Wi-Fi internet connections, as well as LAN and virtual network parameters. Show latency, packet loss, data traffic, bandwidth bottlenecks, and other performance metrics in real time. Visualize monitoring data in clear graphs and dashboards to identify problems more easily. Gain the overview you need to troubleshoot all kinds of network security, availability, performance, and connectivity issues.
Custom PRTG map for a comprehensive IT infrastructure monitoring overview
Preconfigured Traceroute Hop Count sensor in PRTG
30-day historical data graphs in PRTG for detailed analysis
PRTG is compatible with all major vendors, products, and systems
Network monitoring, analysis, and diagnostics with PRTG in a nutshell
PRTG comes with many native sensors that keep a constant eye on specific parameters. For each parameter, you can set your preferred threshold. PRTG alerts you if performance falls under the threshold, so you can immediately check what's going on and sort it. PRTG analysis and diagnostics includes:
Server diagnosis
Your DNS server is down and you don’t know why? Our DNS v2 sensor monitors response times and domain name resolution so you can quickly analyze the root cause of an issue. Keep a constant eye on all your physical and virtual servers, including web servers, mail servers, cloud services, and database servers.
Log analysis
Use our Event Log (Windows API) or WMI Event Log sensors for detailed event log monitoring. In the event of a sudden spike in log entries – which you can filter by log files, event types, sources, messages, etc. – PRTG will send you a notification at once. It’s also possible to have PRTG read and monitor the logs of target systems such as your CDN.
Network traffic analysis
With the Packet Sniffer sensor or our various sensors for flow monitoring (NetFlow, sFlow, jFlow, and IPFIX), it’s easy to always keep an eye on bandwidth and network traffic. PRTG filters traffic data according to IP addresses, data types, data packets, and protocols to quickly get to the root of network connection problems.
Find the root cause of the problem with our PRTG network performance monitoring and analysis solution
Real-time notifications mean faster troubleshooting so that you can act before more serious issues occur.
Your network diagnostics tool at a glance – even on the go
Set up PRTG in minutes and use it on almost any mobile device.
Create innovative solutions with Paessler’s partners
Partnering with innovative vendors, Paessler unleashes synergies to create
new and additional benefits for joined customers.
ScriptRunner
With ScriptRunner, Paessler integrates a powerful event automation platform into PRTG Network Monitor.
UVnetworks
UVexplorer integrates tightly with PRTG to bring fast and accurate network discovery, detailed device inventory, and automatic network mapping to the PRTG platform.
“Excellent tool for detailed monitoring. Alarms and notifications work greatly. Equipment addition is straight forward and server initial setup is very easy. ...feel safe to purchase it if you intend to monitor a large networking landscape.”
Infrastructure and Operations Engineer in the Communications Industry, firm size 10B - 30B USD
PRTG makes spotting and troubleshooting network issues as easy as it gets
Custom alerts and data visualizations let you quickly identify and prevent technical glitches and other system and performance issues.
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
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 network analysis and diagnosis with PRTG and see how it can make your network more reliable and your job easier.
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PRTG |
Network Monitoring Software - Version 25.1.104.1946 (March 18th, 2025) |
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Hosting |
Download for Windows and cloud-based version PRTG Hosted Monitor available |
Languages |
English, German, Spanish, French, Portuguese, Dutch, Russian, Japanese, and Simplified Chinese |
Pricing |
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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