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    Overview
    ProductRatingMost Used ByProduct SummaryStarting Price

    Paessler PRTG

    Score8.4 out of 10
    N/APRTG Network Monitor is the flagship offering from German software company Paessler, for monitoring local and wide area networks (LANs & WANs), servers, websites, apps, and more.

    $2,149

    per year

    Tenable Nessus

    Score8.8 out of 10
    N/ATenable headquartered in Columbia offers Nessus, a vulnerability scanning and security assessment solution used to analyze an entity's security posture, vulnerability testing, and provide configuration assessments.

    $2,790

    Pricing
    Paessler PRTGTenable Nessus
    Editions & Modules
    PRTG 500
    $2,149
    per year
    Hosted 500
    $2,149
    per year
    PRTG 1,000
    $3,899
    per year
    Hosted 1000
    $3,899
    per year
    PRTG 2,500
    $8,099
    per year
    Hosted 2500
    $8,099
    per year
    PRTG 5,000
    $14,199
    per year
    Hosted 5000
    $14,199
    per year
    PRTG 10000
    $17,899
    per year
    PRTG Enterprise
    Custom Pricing
    subscription license
    1 Year
    $2,790.00
    1 Year + Advanced Support
    $3,190.00
    2 Years
    $5,440.00
    2 Years + Advanced Support
    $6,240.00
    3 Years
    $7,951.00
    3 Years + Advanced Support
    $9,151.00
    Offerings
    Pricing Offerings
    Paessler PRTGTenable Nessus
    Free Trial
    YesNo
    Free/Freemium Version
    NoNo
    Premium Consulting/Integration Services
    YesNo
    Entry-level Setup FeeNo setup feeNo setup fee
    Additional Details——
    More Pricing Information
    Community Pulse
    Paessler PRTGTenable Nessus
    Considered Both Products
    Paessler
    No answer on this topic
    Tenable
    No answer on this topic
    Key User Insights
    Would buy again
    98%
    Would buy again
    41 Answers
    100%
    Would buy again
    8 Answers
    Delivers good value for the price
    98%
    Delivers good value for the price
    40 Answers
    100%
    Delivers good value for the price
    8 Answers
    Happy with the feature set
    100%
    Happy with the feature set
    42 Answers
    100%
    Happy with the feature set
    8 Answers
    Lived up to sales and marketing promises
    93%
    Lived up to sales and marketing promises
    28 Answers
    100%
    Lived up to sales and marketing promises
    8 Answers
    Implementation went as expected
    100%
    Implementation went as expected
    38 Answers
    100%
    Implementation went as expected
    7 Answers
    Features
    Paessler PRTGTenable Nessus
    Network Performance Monitoring
    Comparison of Network Performance Monitoring features of Paessler PRTG and Tenable Nessus
    Feature
    Paessler PRTG
    7.3
    67 Ratings
    8% below category average
    Tenable Nessus
    -
    Ratings
    Automated network device discovery7.260 Ratings00 Ratings
    Network monitoring9.666 Ratings00 Ratings
    Baseline threshold calculation8.557 Ratings00 Ratings
    Alerts8.867 Ratings00 Ratings
    Network capacity planning6.448 Ratings00 Ratings
    Packet capture analysis6.234 Ratings00 Ratings
    Network mapping5.447 Ratings00 Ratings
    Customizable reports5.857 Ratings00 Ratings
    Wireless infrastructure monitoring6.249 Ratings00 Ratings
    Hardware health monitoring9.264 Ratings00 Ratings
    Threat Intelligence
    Comparison of Threat Intelligence features of Paessler PRTG and Tenable Nessus
    Feature
    Paessler PRTG
    -
    Ratings
    Tenable Nessus
    6.3
    4 Ratings
    25% below category average
    Network Analytics00 Ratings1.02 Ratings
    Threat Recognition00 Ratings7.14 Ratings
    Vulnerability Classification00 Ratings9.53 Ratings
    Automated Alerts and Reporting00 Ratings10.03 Ratings
    Threat Analysis00 Ratings5.63 Ratings
    Threat Intelligence Reporting00 Ratings5.13 Ratings
    Automated Threat Identification00 Ratings5.63 Ratings
    Vulnerability Management Tools
    Comparison of Vulnerability Management Tools features of Paessler PRTG and Tenable Nessus
    Feature
    Paessler PRTG
    -
    Ratings
    Tenable Nessus
    7.5
    4 Ratings
    10% below category average
    IT Asset Realization00 Ratings7.03 Ratings
    Authentication00 Ratings7.63 Ratings
    Configuration Monitoring00 Ratings8.14 Ratings
    Web Scanning00 Ratings5.63 Ratings
    Vulnerability Intelligence00 Ratings9.34 Ratings
    Best Alternatives
    Paessler PRTGTenable Nessus
    Small Businesses
    Auvik
    Score8.8 out of 10
    No answers on this topic
    Medium-sized Companies
    PingPlotter
    Score9 out of 10
    Qualys TruRisk Platform
    Score6 out of 10
    Enterprises
    Nmap
    Score8.7 out of 10
    Tenable Vulnerability Management
    Score8.9 out of 10
    All AlternativesView all alternativesView all alternatives
    User Ratings
    Paessler PRTGTenable Nessus
    Likelihood to Recommend
    8.8
    (68 ratings)
    9.0
    (9 ratings)
    Likelihood to Renew
    9.9
    (5 ratings)
    9.1
    (1 ratings)
    Usability
    8.3
    (7 ratings)
    8.0
    (5 ratings)
    Support Rating
    8.0
    (19 ratings)
    7.1
    (4 ratings)
    Implementation Rating
    9.0
    (2 ratings)
    -
    (0 ratings)
    User Testimonials
    Paessler PRTGTenable Nessus
    Likelihood to Recommend
    Paessler
    integrates seamlessly with Windows servers via WMI and PowerShell, providing deep insights into resource usage, performance metrics, and system health. It's excellent at tracking CPU, memory, disk space, and event logs, enabling rapid troubleshooting and proactive maintenance. PRTG Network Monitor also effectively monitors Fortigate devices, providing detailed data on firewall health, traffic patterns, bandwidth utilization, VPN status, and security alerts. This visibility helps detect and resolve network security issues promptly.
    Incentivized
    Read full review
    Tenable
    It is an excellent tool for scanning servers, workstations, and network devices to identify missing patches and misconfiguration; we regularly use it to confirm patch effectiveness after the update; it also helps us for preparing audits such as iso 27001, and regulatory requirements, it also helps us to identify open ports and services that violate security.
    Read full review
    Pros
    Paessler
    • Switch monitoring and finding out if there are communication issues or throughput alerts are reached
    • Big picture view of the whole infrastructure and what is functioning and what is not
    • Uptime tracking is great and lets us know for how long a device is down or overall uptime
    Incentivized
    Read full review
    Tenable
    • Nessus is best at performing vulnerability scans, in fact, it gives findings and moreover accurate findings of the assessments. It does not do penetration testing or exploit the vulnerabilities because it is concerned about scanning the systems/applications.
    • In fact, Nessus has multiple profiles/policies to perform different types of scans such as, scans oriented for PCI-DSS, malware scans, web application scans, bad shell shock detection scan to name a few.
    • Nessus has the ability to classify the vulnerabilities into risk-based categories from critical to even informational which I think is one of the things that separates Nessus from other vulnerability scanners.
    Incentivized
    Read full review
    Cons
    Paessler
    • Licensing on a per entity basis can be cumbersome for devices which have a ton of monitoring points like network switches\routers. Each sensor may count against a license, which could be a lot of you were monitoring every TX\RX of an SFP for example
    • A better method to easily template\copy monitors across devices
    • The navigation in the web GUI could be a little more straightforward in terms of the hierarchy
    Incentivized
    Read full review
    Tenable
    • The tool has lots of options for setting up before scanning any device, this methodology could be simplified further with default configuration for various devices predefined, anyhow we can use this technique by making use of policies.
    • For advanced users we cannot disable the plugins inside the plugin groups, we can enable the whole set of plugins at a time, for few hundreds its ok, but thousands of plugins are of waste of resource and time.
    Incentivized
    Read full review
    Likelihood to Renew
    Paessler
    I would renew it because the platform has brought us many technical and economic benefits that make the cost-benefit ratio very good. Additionally, to do so does not require large investments in training, licensing or infrastructure, and at the administration level, extensive knowledge is not required to be able to bear it.
    Incentivized
    Read full review
    Tenable
    Nessus is best and easy to use application for Vulnerabilities finding and reporting, it has multiple platforms and wide scope covering almost all devices for security improvement so far, thus we are very likely to continue its services.
    Incentivized
    Read full review
    Usability
    Paessler
    The tool is very intuitive to use and it is Windows-based (everybody knows how to use Windows) so it's easy to get into. Every time is setup in a hierarchy so if you have a good initial hierarchy design, it will really reduce administrative effort down the road.
    Incentivized
    Read full review
    Tenable
    Tenable Nessus is a great product and provides a lot of value, but it is difficult to set up and use and the amount of data it generates can be overwhelming. It does help us prioritize based on the severity of the detection, however there are sometimes mitigating factors that we have implemented that Nessus does not account for, which causes lots of noise in the reports.
    Incentivized
    Read full review
    Support Rating
    Paessler
    PRTG does everything we need it to do and more. Ease of use, ease of management and maintenance and clarity of monitoring of hundreds of different types of device and service gives this a large advantage over other products on the market that I have tried. I would definitely recommend it to anyone who needs a network monitoring product in their environment and even to people who don't know they need a solution yet!
    Incentivized
    Read full review
    Tenable
    I haven't needed to contact support yet. But issues are easily solved with a quick internet search which means support and by extension, the larger community are involved and knowledgeable.
    Incentivized
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    Implementation Rating
    Paessler
    It's very important that de project's teams have different member of the TI. We have learned too late the importa of Security Analyst at the design architecture moment. We have to rebuild part of the implementation for made this big mistake.
    Incentivized
    Read full review
    Tenable
    No answers on this topic
    Alternatives Considered
    Paessler
    PRTG offers more versatility in monitoring when compared to the other solutions we tested. The other solutions were also limited as far as customization options, which made them less adaptable to our networks. When compared to Auvik, for instance, we prefer PRTG as it offers immediate notifications through the desktop client - not limited to email notifications as with Auvik. We also appreciate the fact that PRTG can be self/on-prem hosted vs Auvik's cloud model. This makes for an easier deployment and less firewall adjustments to allow traffic to cloud-hosted solutions.
    Incentivized
    Read full review
    Tenable
    Sometimes when we identify a vulnerability with Nessus that has an exploit, we made a proof of concept with Metasploit in order to show to the IT managers the importance of the software/hardware hardening.
    Incentivized
    Read full review
    Return on Investment
    Paessler
    • The ability to analyze multiple pieces of information in one place, especially with historical data, has saved our IT department time and headaches. It would be so much more difficult to trace an issue without PRTG, just relying on event logs and an open task manager window.
    • The cost is not cheap, so it's an expense that hits the bottom line like everything else. Figure in hardware costs as well, ideally a server outside of your main environment.
    • I keep saying this, but the historical data piece is worth so much. There's really no good way to collect all of that information in one place without something like PRTG. And that definitely saves time and money in the long run.
    Incentivized
    Read full review
    Tenable
    • Nessus certainly has a positive impact while me while performing my job, either as security research, or performing vulnerability assessments for clients. It gives a lot of information about the system/application after performing scans. The number of false positives is also less compared to other vulnerability scanners.
    • The professional edition is very useful as policy templates available in this edition are very handy and useful even to perform compliance scan like PCI DSS scan.
    • Also, the ability to export the scan results into reports in formats like HTML, PDF is very useful which could be for performing system/application reviews.
    Incentivized
    Read full review
    ScreenShots