Fortra's Intermapper vs Nagios Core comparison

Fortra and Nagios are both solutions in the Network Monitoring Software category. Fortra is ranked #80, while Nagios is ranked #11 with an average rating of 8.7. Fortra holds a 0.5% mindshare in NMS, compared to Nagios’s 1.6% mindshare. Additionally, 100% of Fortra users are willing to recommend the solution, compared to 80% of Nagios users who would recommend it.

Fortra's Intermapper

Read 4 Fortra's Intermapper reviews

1,573 Views
1,510 Comparison Views

100% willing to recommend

Nagios Core

Read 51 Nagios Core reviews

7,235 Views
5,933 Comparison Views

80% willing to recommend

Fortra's Intermapper

Nagios Core

Comparison Buyer's Guide

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Executive SummaryUpdated on Oct 10, 2024

Fortra's Intermapper and Nagios Core are competing products in network monitoring. Intermapper is favored for its ease of deployment and customer service, whereas Nagios Core is preferred for its comprehensive features and customization.

Features: Intermapper offers real-time network mapping and monitoring with user-friendly dashboards. It provides detailed network visualization, intuitive interface, and built-in alerting capabilities. Nagios Core features an extensive plugin ecosystem, advanced customization options, and scalability. It supports complex monitoring needs and detailed performance metrics analysis.

Room for Improvement: Intermapper could enhance its feature set with more customization options, wider integration capabilities, and expanded analytics. Additionally, increasing its plugin variety could add depth. Nagios Core can improve its user-friendliness, streamline its setup process, and develop professional customer service options instead of relying solely on community support. Simplifying its configuration method would attract a broader user base.

Ease of Deployment and Customer Service: Fortra's Intermapper is recognized for straightforward deployment and responsive customer service, facilitating quick implementation and support. In contrast, Nagios Core, though requiring a more complex setup due to its flexible configuration, lacks dedicated customer service, pushing users towards community-based assistance.

Pricing and ROI: Intermapper has a clear pricing structure favorable for short-term ROI, featuring lower initial setup costs. Nagios Core, with its free open-source model, presents a cost-effective long-term return despite potential additional expenses from customizations and integrations. Intermapper enables predictable cost estimation, while Nagios Core suits those with technical skills and specific needs, offering potential savings.

To learn more, read our detailed Fortra's Intermapper vs. Nagios Core Report (Updated: April 2026).

Buyer's Guide

Fortra's Intermapper vs. Nagios Core

April 2026

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Helped 894,738 peers since 2012

Review summaries and opinions

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:

Categories and Ranking

Fortra's Intermapper

Ranking in Network Monitoring Software

80th

Average Rating

8.2

Number of Reviews

Ranking in other categories

No ranking in other categories

Nagios Core

Ranking in Network Monitoring Software

11th

Average Rating

8.2

Reviews Sentiment

7.3

Number of Reviews

Ranking in other categories

IT Infrastructure Monitoring (10th)

Mindshare comparison

As of May 2026, in the Network Monitoring Software category, the mindshare of Fortra's Intermapper is 0.5%, up from 0.3% compared to the previous year. The mindshare of Nagios Core is 1.6%, down from 3.0% compared to the previous year. It is calculated based on PeerSpot user engagement data.

Network Monitoring Software Mindshare Distribution
Product	Mindshare (%)
Nagios Core	1.6%
Fortra's Intermapper	0.5%
Other	97.9%

Network Monitoring Software

Featured Reviews

Andrian Lubimov

SVP of Networking and Operations at Skywire Networks

It tremendously cuts down our troubleshooting timeframe, but needs advanced SLA monitoring and reporting

They can do a better job with SLA reporting. It does some basic reporting, but it really doesn't offer the ability to monitor devices by groups, customers, or carrier to give an overall health performance of specifically-defined environments. That's where HelpSystems Intermapper could have done a better job. I would love to see advanced SLA monitoring and reporting in this solution. They already have a lot of ingredients. They already have SNMP polling. It is really about what people are looking for from SLA monitoring, especially someone who looks at the network topology. You want to see your endpoints. You want to see half of your endpoints by simply analyzing ICMP or SNMP-based availability of your endpoints. Having an ability to define your group and how you bring devices into your group would be a huge benefit.

Read full review

Husham Yaqoob

Senior System Administrator at Interactive Group

Monitoring solution provides comprehensive visibility across IT infrastructure

The good thing about Nagios Core is it covers everything. Everything in the IT domain, you can monitor anything. You can even monitor printers, the ports of printers, Core workstations, and storage. You can monitor the workflow Core and the utilization of computes. If you want to grasp everything of your IT equipment on a single interface, you can use Nagios. It's the best one. It provides dashboards, and you can also configure your emails and alerts with it. If something is critical, you can configure it to notify via emails. It has a very handy dashboard, providing live alerts and visibility for everything.

Read full review

Quotes from Members

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:

Pros

"Put Intermapper in as your base to start from, hands-down."

"The solution has a couple of features which are really interesting; it's not a fancy or expensive solution but we wanted to have a cost effective one and it's doing its job pretty well."

"It's a nice graphical interface, a nice map, that relates Layer 1 to Layer 3, virtually instantly, to the Helpdesk support staff. It provides a default place to get critical information so we can deploy our staff."

"Right now, it is really a combination of network topology, network monitoring, and network analyzing, so, in my opinion, it is awesome."

"The most valuable features are its: log history, real-time monitoring capabilities, accuracy - the number of false positives is very low, and the mapping features."

"It's all today portal-based which is a good feature for us."

"What is really cool about HelpSystems InterMapper is that because of its SNMP base, you can integrate all different makes and models on the same map. You, of course, can have more than one map, but you have an option to have visibility into the entire network from one centralized system. You can monitor IPs, routers, radios, DC power plants, and UPS. You can do it all from one network management and monitoring solution. That's what really makes HelpSystems Intermapper great. Another great thing about HelpSystems InterMapper is that you can really bundle different probes under one device. You can have a bundled device. You can monitor the physical status of a host based on the IP availability. You can also monitor services and actually see if anything happens. You can quickly determine whether it is the application layer, host layer, or network layer. HelpSystems Intermapper gives such a unique representation of a network. Ever since we started using HelpSystems InterMapper, we don't have to document everything in a detailed format and store it somewhere. Right now, it is really a combination of network topology, network monitoring, and network analyzing. So, in my opinion, it is awesome. When you have your SNMP topology defined, you don't require a dedicated NMS engineer to manage your system, which is another great thing about HelpSystems InterMapper. I see how our operators get so excited by having the ability to map a device or interface and connect interfaces together. HelpSystems InterMapper is also very operator friendly; not just user friendly, but also operator friendly. This is a unique feature, and it works really great."

"The graphical alerting with the ability to obtain a quick overview of a monitored device is my favorite feature."

"Nagios monitors our servers, so we know if anything goes wrong and can solve the problem before it happens."

"The reporting structure and the feature set are valuable to me."

"Nagios is able to minimize server downtime and this in turn helps to generate more revenue."

"Nagios allows IT staff and end-users to see the status of critical services on the network and can alert and notify selected users if critical services fail, reducing the mean time to recover."

"Nagios doesn't get the respect it deserves; most likely due to the fact that it doesn't have a licensing cost."

"This is a fit for purpose product which means that if you have a definite list of requirements and are not willing, or unable, to spend money on big enterprise tools, then Nagios is a tool to go to."

"The features of Nagios Core that we find most valuable are the plugins we use, we can check the uptime and see how many servers and routers and create groups accordingly."

"It is fairly easy to set up, and we can monitor pretty much everything we want to."

More Nagios Core pros

Cons

"They can do a better job with SLA reporting. It does some basic reporting, but it really doesn't offer the ability to monitor devices by groups, customers, or carrier to give an overall health performance of specifically-defined environments. That's where HelpSystems Intermapper could have done a better job. I would love to see advanced SLA monitoring and reporting in this solution. They already have a lot of ingredients. They already have SNMP polling. It is really about what people are looking for from SLA monitoring, especially someone who looks at the network topology. You want to see your endpoints. You want to see half of your endpoints by simply analyzing ICMP or SNMP-based availability of your endpoints. Having an ability to define your group and how you bring devices into your group would be a huge benefit."

"I have seen instances where Intermapper does not seem to recover from network changes."

"It's a smaller solution so tools are not as advanced as you would find in a larger solution"

"I'd love to see more of the network management side of it coming back into it. If we were able to run scripts to bounce ports on switches, that would be great. It's asking a lot, but it's actually very doable because I do it through scripting into other products. If we could incorporate that directly into Intermapper, that would be fantastic."

"I'd love to see more of the network management side of it coming back into it."

"I would like to see a much better Nagios Manager GUI that can support all type of configuration items, and advance search options."

"The NetEase reporting structure needs improvement, especially the availability report, which is weak."

"Nagios SLA. I'm currently working on Nagios Digger, which has many code-level problems."

"Nagios Core could improve by adding a user interface. If you want the user interface you have to use Nagios XI."

"Nagios Core is not easy to use, so I don't recommend it for everyone."

"The initial setup was complex, mainly because it was in Linux and had many packages that we're not used to."

"It's not that easy to install the product itself. Also, the UI is a bit hard for regular users to navigate through."

"It is a bit slow due to latency."

More Nagios Core cons

Pricing and Cost Advice

Information not available

"The solution is expensive."

"Nagios Core is free to use."

"We are using the free version of Nagios Core."

"We are using the open-source, unpaid version."

"We are using the free version."

"It's free."

"The product is cheaply priced."

"I would rate the solution's pricing an eight out of ten."

More Nagios Core pricing and cost advice

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Top Industries

By visitors reading reviews

Government

17%

Construction Company

11%

University

Comms Service Provider

10%

Manufacturing Company

10%

Computer Software Company

Financial Services Firm

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

No data available

By reviewers
Company Size	Count
Small Business	20
Midsize Enterprise	11
Large Enterprise	24

Questions from the Community

Ask a question

Earn 20 points

What is your experience regarding pricing and costs for Nagios Core?

Nagios Core is a free and open-source product. We don't charge for the product itself, but we charge for the man-hour costs related to installation, configuration, ongoing operation, and maintenance.

See all answers

What needs improvement with Nagios Core?

The dashboard should be improved. It's very simple. I don't have a very clear or specific suggestion. You can change the skin of the dashboard, however, it's good for me.

See all answers

What is your primary use case for Nagios Core?

I was a senior system administrator. I've been using Nagios Core for more than ten years now. It can be used to monitor hosts, such as machines, and monitor services of any kind. I'm using it to mo...

See all answers

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Compared 7% of the time

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Compared 5% of the time

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Compared 5% of the time

Centreon vs Nagios Core

Compared 5% of the time

OpenNMS vs Nagios Core

Compared 4% of the time

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Product Reports

Buyer's Guide

Network Monitoring Software

April 2026

Download Fortra's Intermapper product report

Buyer's Guide

Nagios Core

April 2026

Download Nagios Core product report

Also Known As

HelpSystems Intermapper

No data available

Overview

Fortra's Intermapper offers real-time network mapping and monitoring, ideal for IT teams seeking a reliable visualization and alerting tool to maintain uptime and connectivity.

Ideal for IT environments, Fortra's Intermapper provides dynamic and intuitive network mapping capabilities. Known for its ability to display an up-to-date graphical view of IT infrastructure, this solution enables proactive monitoring through instant alerts and performance insights. It helps IT teams swiftly address potential issues, ensuring consistent connectivity and performance.

What are the key features of Fortra's Intermapper?

Real-Time Network Mapping: Displays live network status for immediate infrastructure insight.
Customizable Alerts: Allows personalized notifications for targeted problem-solving.
Performance Monitoring: Tracks metrics to preemptively identify potential disruptions.
Cross-Platform Compatibility: Supports different operating systems for wider usability.
Historical Data Maintenance: Retains past network data for trend analysis and reporting.

Which benefits or ROI can users expect from Fortra's Intermapper?

Improved Network Visibility: Enhances understanding of network status and layout.
Faster Issue Resolution: Real-time alerts and monitoring minimize downtime.
Cost Efficiency: By reducing outages, operational costs decrease significantly.
Enhanced User Experience: Stable networks boost overall end-user satisfaction.

In industries such as healthcare, finance, and education, Fortra's Intermapper is a vital tool for maintaining high network performance and reliability. It plays a crucial role in environments where uptime is critical, ensuring that network issues are resolved swiftly to support essential operations.

Fortra

Nagios Core offers a versatile monitoring solution that efficiently manages notifications, reporting, and resource usage. Its open-source architecture provides flexibility and customization options for comprehensive infrastructure health management.

Nagios Core, known for its extensible plugin architecture, proactively enhances infrastructure management with customizable notifications and reliable reporting. Seamlessly integrating various plugins, it offers real-time dashboards and efficient alerting systems for thorough monitoring. Its adaptability and ease of configuration make it popular among users seeking flexible monitoring solutions. However, improvements in the web interface, scalability, performance, and visualization are needed to enhance accessibility. Users seek better alert mechanisms, more robust PDF export features, and simpler setup processes for increased efficiency.

What are the key features of Nagios Core?

Customizable Notifications: Tailor alerts to suit specific needs.
Reliable Reporting: Provides detailed insights into system performance.
Light Resource Usage: Operates efficiently with minimal resource demands.
Extensible Plugin Architecture: Supports a wide range of third-party integrations.
Real-Time Dashboards: Offers instant insights into system health.

What benefits should users expect from Nagios Core?

Flexibility: Allows detailed customization for unique monitoring requirements.
Open-Source Nature: Encourages community-driven enhancements and support.
Integration Capabilities: Facilitates seamless interaction with other tools and platforms.
Adaptability: Supports monitoring across different environments seamlessly.

In many industries, Nagios Core is integral to monitoring infrastructure and services, including cloud servers, applications, and network devices. Users rely on it for issue detection, capacity planning, and maintaining system stability in environments like AWS and on-premise servers. Its capabilities in CPU, memory, and bandwidth monitoring along with alert systems support sectors needing real-time oversight of critical equipment.

Nagios

Sample Customers

Greater Media Detroit, University of British Columbia, Don's Farm Supply

Airbnb, Cisco, PayPal, FanDuel

Buyer's Guide

Fortra's Intermapper vs. Nagios Core

April 2026

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