Compare Nagios vs Tenable

Nagios

Based on 126 reviews.

Tenable

Based on 242 reviews.

Latest Research

Buyer's Guide

Nagios XI vs. Zabbix

October 2025

Zabbix vs. Nagios XI

Updated: October 2025

Buyer's Guide

Nagios Core vs. Nagios XI

September 2025

Nagios XI vs. Nagios Core

Updated: September 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

7 reviews

Nagios Network Analyzer

2 reviews

Tenable Nessus

14 reviews

Tenable Security Center

14 reviews

Tenable Vulnerability Management

15 reviews

Top Industries

Computer Software Company

13%

Financial Services Firm

Government

Manufacturing Company

Computer Software Company

12%

Financial Services Firm

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

Gilbert Mwiinga
Baobab College logo System Administrator at Baobab College
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 Digital Pulse Sdn Bhd
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 Interactive Group
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 »
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 »
SyarulIdzuddin Adzmi
Operation Director at Digital Pulse Sdn Bhd
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 CBTS
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 EXPERTience
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 WSP
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 Payatu
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 »
Jonathan-Pereira
Cyber Security Architect at a comms service provider
I have at least three use cases. One is for ITDR solutions for threat detection. Another is the vulnerability...
Read full review of Tenable.io Web Application Scanning »

Review 1 of 5

Customer Service

Uzair Hu
Director Business Development at Maxtech Solutions
We refer to knowledge-based articles for the solution's technical queries. Also, we reach their customer service via...
Read full review of Nagios Network Analyzer »
Amir Said
Site Duty Manager at Assw
We didn't need to ask them for support before. It's easy to deal with it.
Read full review of Nagios XI »
James Jaramillo
IT Specialist at ADDI
Nagios support is good. They also have a complete knowledge base, so if you need to figure something out, you can...
Read full review of Nagios Core »
Rizwan Shabbir
Systems Administrator at Mentor Graphics
We do not have support for this solution, it is free.
Read full review of Nagios Core »
FakhruddinLokhandwala
Solutions Architect at NTT
I rate the technical support an eight out of ten.
Read full review of Nagios XI »
Syarul Idzuddin Adzmi
Operation Director at Digital Pulse Sdn Bhd
I had raised a ticket with the solution's technical support for some stability issues, and they helped me resolve my...
Read full review of Nagios Log Server »
Anonymous User
Strategic Staffing Solutions at a retailer
Tech support has been pretty good. There have been a couple of occasions where we've had to pick up the phone and...
Read full review of Nagios Core »
DHINIL KUTTIKADAN
Unix Administrator at emaratech
Support could be better. The main issue is that their support is in the US. They are only available in a certain...
Read full review of Nagios Log Server »
Constant Assoukpe
Administrateur reseaux at Orange
It's very stable, so I haven't needed to contact 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
Co-Founder / Executive Director / Chief Technical Officer at a tech company
The initial setup was a little bit straightforward but cumbersome as there was more work in tweaking to make it work...
Read full review of Nagios XI »
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
Manager Infrastructure at a manufacturing company
As it's an opensource project, there is good contribution to, and good support, from blogs and FAQs.
Read full review of Nagios XI »
Anonymous User
Site Reliability Engineer at a tech company
I haven't had the need to use technical support.
Read full review of Nagios Core »
Anonymous User
Network Operations Center Manager at a tech services company
We have not contacted technical support. Most of the online documentation is helpful.
Read full review of Nagios Core »
Anonymous User
Senior Systems Architect at Rezgateway
The end-users love quick alerting and Grafana dashboards.
Read full review of Nagios Core »
Anonymous User
NOC Manager/Network Administrator at a tech vendor
I dealt with technical support for a few months, but because I do not have a support contract I have not used it in...
Read full review of Nagios XI »
Anonymous User
Constructor of the computer systems at a security firm
Customer Service: I only have the free version, which does not have customer service. Technical Support: I only have...
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 »
Matthew Camilleri
NMS Team Leader at KORE Telematics Inc.
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 »
Hattab Mahdi
Assistant Director at unpa
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 »
Anonymous User
IT-OSS Manager at a comms service provider
We don't have technical support for Nagios because we are living in Iran and we have embargoes, so we cannot use the...
Read full review of Nagios XI »
Hattab Mahdi
Assistant Director at unpa
I have not needed to contact technical support. There are webinars and other information available that I have made...
Read full review of Nagios XI »
Anonymous User
Network Engineer at TLCWEB S.R.L.
Customer Service: I haven't had to use it. Technical Support: I haven't had any need to use it.
Read full review of Nagios XI »
Anonymous User
Technology Innovator and Entrepreneur at a tech services company
In general, tech support is available as needed but it is not inexpensive. Response times are generally within 24...
Read full review of Nagios XI »
Anonymous User
Manager - Cybersecurity Technology, Cybersecurity Technology Services at a tech services company
Customer Service: I'm not using any customer service. Technical Support: I'm not in need of any technical support.
Read full review of Nagios XI »
Anonymous User
Manager of Infrastructure at a university
Customer Service: Customer service is excellent. Technical Support: I haven't needed any technical support.
Read full review of Nagios XI »
Anonymous User
Software Engineer at a transportation company
I haven't tried to contact support. I was searching on the support forums, but that was not for me. I tried many...
Read full review of Nagios Core »
Anonymous User
Solutions Architect at Blue Telecom Consulting
They have very accurate and fast support.
Read full review of Nagios XI »
Michael Nbwiga
IT CIO at Kimfay
We have not been in contact with technical support.
Read full review of Nagios XI »

Review 1 of 30

Abu Imran
Information Security Engineer at Nhq Distribution Ltd
The solution's technical support does respond to my company's queries.
Read full review of Tenable Security Center »
Pathick Kerketta
Manager (Information Security) at Girnarsoft Private Limited
I have not contacted the support.
Read full review of Tenable Nessus »
DanielDurante
Senior Manager at Clearsale
We never have any kind of problem or lack of response. I would rate them a ten out of ten.
Read full review of Tenable Nessus »
Rafael Ustariz
IT security consultant at Netready LATAM
Tenable SC support has been very helpful.
Read full review of Tenable Security Center »
Wanderley Viana
Security Operation Coordinator at a financial services firm
The official language in Brazil is Portuguese, and the support team has difficulty speaking it. Not all my technical...
Read full review of Tenable One Exposure Management Platform »
Muhammad Kamran Khan
Manager Information Security at NCCPL
We contacted support for some scenarios, like upgrades, new security patches, and for some customized reports. We...
Read full review of Tenable Nessus »
Mohamed-Helmy
Chief Information Security Officer at MIDBANK
Tenable technical support needs improvement.
Read full review of Tenable Security Center »
Jahanzeb Feroze Khan
Assistant Manager Network Security at Institute of Business Administration, Karachi
Support doesn't understand the issues and cannot arrange resources per our time.
Read full review of Tenable.io Container Security »
Jahanzeb Feroze Khan
Assistant Manager Network Security at Institute of Business Administration, Karachi
The technical support should be improved.
Read full review of Tenable.io Web Application Scanning »
TomasStasek
IT Director at Teleperformance
The support we have for Tenable Nessus is internal. The IT teams for Tenable Nessus are in the Czech Republic for us.
Read full review of Tenable Nessus »
Jaya Shanker
IT Security Manager at a insurance company
I never contacted Tenable One Exposure Management Platform support for any issues on the platform.
Read full review of Tenable One Exposure Management Platform »
Amr Abdelnaser
Senior Information Security Analyst at EastNets Holding Ltd.
My colleagues say that the tech support team is very responsive and helpful.
Read full review of Tenable Vulnerability Management »
OmkarZarapkar
Manager II at a insurance company
Technical support is very good and responsive. A few months back, we utilized their assistance for configurations on...
Read full review of Tenable Nessus »
Asief Mohammed
Information Technology Consultant at Simpra advanced technology
The support team was helpful. Usually, we don't contact the support team because our engineers do the installation....
Read full review of Tenable Security Center »
Anonymous User
Security Compliance Officer at a tech services company
I did not deal with technical support at all.
Read full review of Tenable Nessus »
Donald Koketso
Security engineer at a construction company
It was challenging to contact the technical support team earlier. However, we have found the right contact and can...
Read full review of Tenable Vulnerability Management »
Bryan Evans
Security Analyst at PJM Interconnection
I rate the support of Tenable Nessus a four out of five.
Read full review of Tenable Nessus »
Pov Men
Network Security Engineer at np secure
I am satisfied with technical support.
Read full review of Tenable SecurityCenter Continuous View [EOL] »
Anonymous User
Lead Cyber Security engineer at a tech services company
We feel the solution's technical support to be very bad. While we do receive a response upon creating a ticket, it is...
Read full review of Tenable Nessus »
Anonymous User
Ex Senior Security Analyst and Onsite consultant at Paladion Networks
We experienced very quick customer support. They had a complete list of our previous issues along with our history...
Read full review of Tenable.io Container Security »
HARI EDARA
IT Manager at State of Texas
Technical support is good. We have 24/7 support from them. There are some of sales managers who are the bridge...
Read full review of Tenable Vulnerability Management »
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 »
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 »
Anonymous User
Information Security Manager at a transportation company
They are very good. Their formal support and the wider community support are excellent.
Read full review of Tenable Nessus »
Anonymous User
IT Manager at a financial services firm
I rate the technical support a seven out of ten.
Read full review of Tenable Vulnerability Management »
Gintaras_Navickas
Cyber Security Officer at Gudu
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 »
KalaiarasuSanthirasekeran
Security Professional at a tech vendor
We have not needed to contact tech support much. We contacted them about the false positives, and they were helpful.
Read full review of Tenable Nessus »
Anonymous User
CISO at a financial services firm
The support team is very good and we are quite happy with them. When we had the trouble with Docker Version 2, they...
Read full review of Tenable Vulnerability Management »
Dhananjay-Naldurgkar
Senior Consultant - Cyber Security Services at a computer software company
Tech support is good. I think we are now partnered with Tenable.
Read full review of Tenable Nessus »
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 »

Review 1 of 30

Technical Support

No Data Available

We monitor all reviews to prevent fraudulent reviews and keep review quality high. We do not post reviews by company employees or direct competitors. We validate each review for authenticity via cross-reference with LinkedIn, and personal follow-up with the reviewer when necessary.