Compare Nagios vs Tenable

Nagios

Based on 126 reviews.

Tenable

Based on 246 reviews.

Latest Research

Buyer's Guide

Nagios XI vs. Zabbix

December 2025

Zabbix vs. Nagios XI

Updated: December 2025

Buyer's Guide

Nagios Core vs. Nagios XI

December 2025

Nagios XI vs. Nagios Core

Updated: December 2025

Overview

Nagios, an open-source computer-software application, monitors systems, networks and infrastructure. Nagios offers monitoring and alerting services for servers, switches, applications and services. It alerts users when things go wrong and alerts them a second time when the problem has been resolved. Ethan Galstad and a group of developers originally wrote Nagios as NetSaint. As of 2015 "Agios" also transliterates the Greek word, which means "saint".

Tenable Network Security is a developer of vulnerability detection systems. Tenable Network Security is an American network security company, co-founded by Ron Gula, Jack Huffard, and Renaud Deraison in 2002.

Sample Customers

Nagios XI

Nagios has over one million users globally, including AOL, DHL, McAfee, MCI, MTV, Yahoo!, Universal, Toshiba, Sony, Siemens, and JPMorgan Chase.

Nagios Core

Airbnb, Cisco, PayPal, FanDuel

Popular Solutions

Nagios XI

4 reviews

Nagios Core

6 reviews

Nagios Network Analyzer

0 reviews

Tenable Nessus

14 reviews

Tenable Security Center

13 reviews

Tenable Vulnerability Management

11 reviews

Top Industries

Computer Software Company

11%

Financial Services Firm

Manufacturing Company

Government

Financial Services Firm

11%

Computer Software Company

11%

Manufacturing Company

10%

Government

Quotes From Member Reviews

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

Most Helpful Reviews

Emmanuel Appiah Boateng
Network and Security Engineer at a educational organization
I normally use Nagios XI for our servers. It's not particularly used for network equipment, however, I use it for...
Read full review of Nagios XI »
Gilbert Mwiinga
Baobab College logo System Administrator at a university
Primarily, I use it to monitor the uptime of all equipment, as well as network connectivity, availability, and the...
Read full review of Nagios Network Analyzer »
Syarul Idzuddin Adzmi
Operation Director at a tech services company
In my company, we use Nagios Log Server as our data center.
Read full review of Nagios Log Server »
Husham Yaqoob
Senior System Administrator at a tech services company
I was a senior system administrator. I've been using Nagios Core for more than ten years now. It can be used to...
Read full review of Nagios Core »
SyarulIdzuddin Adzmi
Operation Director at a tech services company
We use it for this specific client, they've deployed multiple instances of it across various locations to facilitate...
Read full review of Nagios Fusion »

Review 1 of 5

Chethan Gowda
Windows Security Patching Operation III (Cyber Operations) at a outsourcing company
We usually use Tenable Vulnerability Management for vulnerability scannings, and we get the reports from Tenable to...
Read full review of Tenable Vulnerability Management »
OndrejKOVAC
Solution engineer at a consultancy
The primary use case for Tenable Security Center among my clients is risk-based vulnerability management. It involves...
Read full review of Tenable Security Center »
DragosCernat
Information Security Architect at a transportation company
We had other solutions that we used. One solution was that we did not have something exactly similar to what Element...
Read full review of Tenable Cloud Security »
AbhishekPandey5
Senior Consultant at a manufacturing company
I am using it for Asset Discovery, vulnerability management and threat intel. Tenable OT Security is for asset...
Read full review of Tenable OT Security »
Arun Seetha
Cyber Security Architect at a security firm
I have been dealing with Tenable.io Container Security for almost four to six months.
Read full review of Tenable.io Container Security »

Review 1 of 5

Customer Service

Emmanuel Appiah Boateng
Network and Security Engineer at a educational organization
I haven't really needed to contact tech support from Nagios. I haven't had much experience with their customer service.
Read full review of Nagios XI »
PriyankaBachu
Senior Consultant at a consultancy
The technical support is variable - sometimes I get answers, but most of my tickets go unanswered.
Read full review of Nagios XI »
Daniel Tamiru
Manager, Database & System Administration at a financial services firm
We do not have experience with customer service and support.
Read full review of Nagios Core »
Anonymous User
Partner Technical Support & Escalation Manager at a tech vendor
I have not contacted them for a long time.
Read full review of Nagios Core »
Anonymous User
Solutions Architect at a consultancy
They have very accurate and fast support.
Read full review of Nagios XI »
Nishith Vyas
Sr. System Administrator at a tech services company
I require less customer service because I am using an open source product. But, sincere thanks to the Nagios...
Read full review of Nagios Core »
Anonymous User
Manager, IT at a wholesaler/distributor
For any problem, we Google it to easily find a solution.
Read full review of Nagios Core »
Anonymous User
Senior Systems Architect at a tech vendor
The end-users love quick alerting and Grafana dashboards.
Read full review of Nagios Core »
Anonymous User
Web Operations Engineer at a renewables & environment company
I didn't use customer service and technical support for Nagios. Everything I did I learned online through the...
Read full review of Nagios XI »
Anonymous User
Account Manager, Cybersecurity at a tech services company
Support, we have a time zone issue, but we are providing our own support. I don't believe we require anything,...
Read full review of Nagios XI »
Anonymous User
Consultant Ingénieur de production informatique at a tech services company
Nagios responds quickly when you need them, and the community is really big.
Read full review of Nagios XI »
Anonymous User
Operational Lead at a government
The solution's technical support is okay. I am always with the people on the support side.
Read full review of Nagios XI »
MohamedEl Azzouzi
Production Systems Engineer at a tech services company
Technical support isn't very good. You can't find much help on the forums. You need to look things up by yourself...
Read full review of Nagios Network Analyzer »
Anonymous User
System Administrator at a hospitality company
With the open source forks, the community is vast and so is the knowledge around the product. Because of this, even...
Read full review of Nagios XI »
SyarulIdzuddin Adzmi
Operation Director at a tech services company
I am satisfied with its technical support and I would rate it nine out of ten.
Read full review of Nagios Fusion »
Hattab Mahdi
Assistant Director at a manufacturing company
I think it's average. It's not fast, but I think it's okay. For the price, I think the quality of support is normal.
Read full review of Nagios XI »
Hattab Mahdi
Assistant Director at a manufacturing company
Customer Service: Customer service is good. Technical Support: Technical support is the best.
Read full review of Nagios XI »
Anonymous User
R&D Support & Monitoring, IT Production at a tech vendor
I haven't had any experience with technical support.
Read full review of Nagios XI »
Krish Sastry
Distributed Systems Architect at a manufacturing company
It's based on a forum. It allows us to get help from support as well as from other clients who may have knowledge.
Read full review of Nagios XI »
David Pratt
Senior DevOps Engineer Individual Contributor at a financial services firm
Technical support is generally good. I would rate them a four out of five.
Read full review of Nagios XI »
Goce Gavrilov
Chief Information Officer at a insurance company
I have not been in touch with Nagios technical support.
Read full review of Nagios Fusion »
Michael Nbwiga
IT CIO at a consultancy
We have not been in contact with technical support.
Read full review of Nagios XI »
Manoj Nair
Tech consultant at a tech services company
No vendor involvement
Read full review of Nagios Core »
Matthew Camilleri
NMS Team Leader at a comms service provider
We use the support forum. In fact, it's part of the license. Even if you're just a member of the forum, you can still...
Read full review of Nagios XI »
Anonymous User
IT Administrator at a tech services company
I've never used tech support and I find all my answers on Google or forums.
Read full review of Nagios Core »
Anonymous User
Senior Technical Support Engineer at a cloud solution provider
We have not needed technical support.
Read full review of Nagios Core »
Anonymous User
Network Engineer at a retailer
We don't really have technical support from the solution. We rely instead on learning the solution and focusing on...
Read full review of Nagios Core »
Anonymous User
Manager IT / Technical Project at a comms service provider
The support from Nagios XI is good and the response time is good. However, it can take some time to reach the right...
Read full review of Nagios XI »
Mario Domeniconi
CEO at a tech services company
The technical support is quite good.
Read full review of Nagios Network Analyzer »
Aymen Dridi
Systems and Virtualization Engineer at a tech services company
We use the open-source version of this solution and there is a large community that can provide support for any of...
Read full review of Nagios Core »

Review 1 of 30

Jairo Willian Pereira
Information Security Manager at a retailer
It SLA/support are enough.
Read full review of Tenable Nessus »
Robert Cheruiyot
IT Security Consultant at a reseller
We haven't had a lot of challenges with the solution and therefore have not really contacted technical support.
Read full review of Tenable.io Web Application Scanning »
PapadAnandKumar
Senior OT Security Consultant at a consultancy
The support team is the same as others. There are delays. If I find a bug, they say they already know and are working...
Read full review of Tenable OT Security »
JoaoManso
CIO / IT Consultant at a marketing services firm
Tenable's American technical support is excellent, though the European version is not quite as good as it takes...
Read full review of Tenable Security Center »
Mohamed-Helmy
Chief Information Security Officer at a financial services firm
Tenable technical support needs improvement.
Read full review of Tenable Security Center »
Md. Shahriar Hussain
Information Security Analyst at a comms service provider
The technical support is good. They offer expensive professional support, but I generally use the website...
Read full review of Tenable Nessus »
Abhik Chatterjee
Senior Manager at a tech vendor
The support from Tenable SC is good. I rate the support from Tenable SC a four out of five.
Read full review of Tenable Security Center »
Antonio Scola
Owner at a tech services company
Technical support is okay. We don't have any complaints about their level of service. They are knowledgeable and...
Read full review of Tenable Vulnerability Management »
Jahanzeb Feroze Khan
Assistant Manager Network Security at a educational organization
The technical support should be improved.
Read full review of Tenable.io Web Application Scanning »
Javier Salazar
Security Engineer at a tech vendor
Technical support could improve its response time.
Read full review of Tenable OT Security »
VictorAkidiva
Security Architect at a tech services company
Technical support has been excellent and provides a lot of support when needed.
Read full review of Tenable Security Center »
OndrejKOVAC
Solution engineer at a consultancy
Tenable's technical support has declined in quality over time. While they used to be excellent, achieving ratings of...
Read full review of Tenable Security Center »
MatteoMazzei
Security Manager at a computer software company
The solution's technical support is good and quick to respond. If you have a problem, you can be sure that someone...
Read full review of Tenable Vulnerability Management »
Anonymous User
President and CEO, Founder Executive at a tech vendor
I've never used technical support in the past. I've never had a need to. Therefore, I wouldn't be able to assess...
Read full review of Tenable Vulnerability Management »
Anonymous User
Head of Information Security at a consultancy
I rate Tenable technical support as an eight or nine out of ten. They are helpful and were very helpful to us,...
Read full review of Tenable Security Center »
Carl Lavarro
Cyber Security Associate at a consultancy
Support is okay. However, we've had issues with them. I've had difficulties raising cases. They need to be more...
Read full review of Tenable Vulnerability Management »
Anonymous User
Security Consultant at a tech consulting company
I never needed to contact support. It is very easy to understand and easy to configure.
Read full review of Tenable.io Web Application Scanning »
Anonymous User
Chief Hacking Officer at a security firm
We haven't had the need to contact technical support.
Read full review of Tenable Nessus »
Anonymous User
Security Consultan at a security firm
The support ticketing system needs improvement. Whenever we create tickets, they are directed to a general support...
Read full review of Tenable.io Web Application Scanning »
Anonymous User
Security Specialist at a security firm
Many times, I get some answers that are not suitable information for my query. Thus, I need to escalate our vendors...
Read full review of Tenable Vulnerability Management »
Anonymous User
Information Security Analyst at a retailer
Technical support is excellent. They are extremely responsive and very helpful. We are quite satisfied with the level...
Read full review of Tenable Security Center »
Anonymous User
Director of Cyber Security at a outsourcing company
I provide support to my customers. I have not run into an issue that I needed to contact the support from Tenable.io...
Read full review of Tenable.io Web Application Scanning »
Daniel Durante
Senior Manager at a security firm
The technical support is great. We have called them a few times and they have always helped us.
Read full review of Tenable Nessus »
Hiroshi Watanabe
Marketing Expert at a comms service provider
The technical support from Tenable Security Center is very good; I'm satisfied with the support. I would rate it an...
Read full review of Tenable Security Center »
Anonymous User
CISO at a financial services firm
The solution's technical support is quite good and very supportive. I rate the technical support nine and a half out...
Read full review of Tenable.io Container Security »
Javeed Abdul
Senior System Engineer at a tech consulting company
I would rate the tech support a five out of ten. Our company has raised multiple tickets with issues in graphs, but...
Read full review of Tenable Cloud Security »
Jerome TOUTEE
Former Employee of Orange Business Services as Head of Security Engineering at a comms service provider
The technical support team is good. But one drawback is that they must give more attention to small customers. We had...
Read full review of Tenable Nessus »
Gintaras_Navickas
Cyber Security Officer
I consulted with support about half a year ago. They connected through TeamViewer and helped me resolve the problem.
Read full review of Tenable Nessus »
Anonymous User
Security Consultan at a security firm
They assist me every day, not just daily but several times a week, around three to four times. I handle support for...
Read full review of Tenable.io Container Security »
Andrew Lane
Cloud Security Engineer at a tech vendor
Customer support for Tenable Cloud Security is recommended, with no problems and very responsive.
Read full review of Tenable Cloud Security »

Review 1 of 30

Technical Support

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