Fortra's Intermapper vs Nagios Core comparison

Fortra and Nagios are both solutions in the Network Monitoring Software category. Fortra is ranked #81, while Nagios is ranked #10 with an average rating of 8.7. Fortra holds a 0.5% mindshare in NMS, compared to Nagios’s 1.9% 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

1,037 Views
985 Comparison Views

100% willing to recommend

Nagios Core

Read 51 Nagios Core reviews

5,494 Views
4,505 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: March 2026).

Buyer's Guide

Fortra's Intermapper vs. Nagios Core

March 2026

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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

81st

Average Rating

8.2

Number of Reviews

Ranking in other categories

No ranking in other categories

Nagios Core

Ranking in Network Monitoring Software

10th

Average Rating

8.2

Reviews Sentiment

7.3

Number of Reviews

Ranking in other categories

IT Infrastructure Monitoring (10th)

Mindshare comparison

As of March 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 1.9%, 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	1.9%
Fortra's Intermapper	0.5%
Other	97.6%

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

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

"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."

"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."

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

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

"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 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."

"It has made the life of the network operations staff more proactive in managing the resources of the infrastructure. It prevents disasters long before they can take place."

"Nagios Core is stable."

"The scalability of Nagios Core is very good, we can add as many hosts as we like, and we can work with the concept master and client, making it very scalable and easy to use."

"Using Nagios, I'm managing more than 1000 services, which involves the following operating nodes: IBM AIX, Red Hat Enterprise Linux, HP-Unix, Windows enterprise-grade OS, Cisco router/switches, FortiGate and WatchGuard firewalls, APC UPS systems, and many more."

"Provides timely notifications."

"Nagios Core is stable."

"Monitoring with Nagios Core is helpful because it provides immediate alerts if something goes down, such as a server, or wireless router, or if there's a cable break. This allows us to respond promptly to any issues."

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

More Nagios Core pros

Cons

"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."

"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"

"Generally, it does what I need it to do, but better error reporting would be great."

"Nagios Core would benefit from aggregations if a particular server goes down."

"Would benefit from aggregations if a particular server goes down."

"Bandwidth monitoring is the pain point for me because Nagios Core does not monitor bandwidth effectively like Cacti does."

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

"Nagios Core is limited in terms of distributed setups, and there is no central view for remote data centers."

"The alerting mechanism in Nagios Core could be improved."

"We use the free version of Nagios, which needs some administrative skills in order to configure correctly."

More Nagios Core cons

Pricing and Cost Advice

Information not available

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

"The enterprise version has technical support. The version we are using is free."

"Lessening the price point would be an improvement."

"We have saved a lot of time, money, and effort in reducing disaster times, which is owed to Nagios quick alerting."

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

"The Nagios Core (PNP4Nagios + Core) is free and can be setup by Netadmin within a few hours. The only additional cost is the cloud server."

"It's free."

"The solution is expensive."

More Nagios Core pricing and cost advice

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Top Industries

By visitors reading reviews

Government

19%

Construction Company

University

Recreational Facilities/Services Company

Manufacturing Company

10%

Comms Service Provider

10%

Computer Software Company

Government

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	23

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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Product Reports

Buyer's Guide

Network Monitoring Software

March 2026

Download Fortra's Intermapper product report

Buyer's Guide

Nagios Core

March 2026

Download Nagios Core product report

Also Known As

HelpSystems Intermapper

No data available

Overview

Fortra's software frees you up to focus on what matters most, aligning IT and business goals to help organizations build a competitive edge. Intermapper is network monitoring software for organizations who want to monitor their IT infrastructure in real time.

With Intermapper, you can visualize all your physical and virtual network components on a live map and get up-to-date performance data on its availability. Powerful and user-friendly, Intermapper helps leading businesses prevent costly outages and maximize uptime for 24/7 availability of network resources.

Features include flexible monitoring for anything with an IP address, free probes to monitor different types of equipment from various vendors, dynamic network mapping, bandwidth monitoring, real-time alerts, and remote access. Our add-on integration with Automate allows you to remediate network failures and conduct network self-healing.

Intermapper runs on Mac, Windows, and Linux.

Fortra

This is IT infrastructure monitoring's industry-standard, open-source core. Free without professional support services.

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

March 2026

Free Report: Fortra's Intermapper vs. Nagios Core

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