Compare Nagios vs Tenable

Nagios

Based on 126 reviews.

Tenable

Based on 249 reviews.

Latest Research

Buyer's Guide

Nagios XI vs. Zabbix

August 2026

Zabbix vs. Nagios XI

Updated: August 2026

Buyer's Guide

Nagios Core vs. Nagios XI

August 2026

Nagios XI vs. Nagios Core

Updated: August 2026

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

3 reviews

Nagios Network Analyzer

0 reviews

Tenable Nessus

12 reviews

Tenable Security Center

6 reviews

Tenable Vulnerability Management

7 reviews

Top Industries

Financial Services Firm

Comms Service Provider

Manufacturing Company

Construction Company

Financial Services Firm

11%

Manufacturing Company

Government

Computer Software Company

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 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 »
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 »
DHINIL KUTTIKADAN
Unix Administrator at emaratech
It's for analyzing logs in the web server. For example, if there is a password authentication failure attempt...
Read full review of Nagios Log Server »

Review 1 of 4

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 »
Jaya Shanker
IT Security Manager at a insurance company
We use Tenable One Exposure Management Platform for vulnerability management in our internal application and external...
Read full review of Tenable One Exposure Management Platform »
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 »
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 »
Anonymous User
Head of Information Security at a consultancy

Read full review of Tenable Security Center »

Review 1 of 5

Customer Service

Amit Rane
Testing Staffing Manager at Capgemini
Technical support is good. They have some platinum, gold, and bronze support options. Based on your eligibility, they...
Read full review of Nagios Network Analyzer »
Daniel Tamiru
Manager, Database & System Administration at Awash International Bank
We do not have experience with customer service and support.
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 »
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
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 »
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
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 Netability Singapore Pte Ltd
The technical support is quite good.
Read full review of Nagios Network Analyzer »
Anonymous User
Client Engineer at a tech services company
Since Nagios is open source, I had to rely completely on forums and web articles. However, Nagios was set up before I...
Read full review of Nagios Core »
Anonymous User
IT Support Technician
Customer Service: Can't comment on this as Nagios Core is supplied without support. Technical Support: This is one...
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 »
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 »
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 »
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 »
MohamedEl Azzouzi
Production Systems Engineer at Enwe
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 »
DHINIL KUTTIKADAN
Unix Administrator at emaratech
The support is good. I would rate them a seven out of ten.
Read full review of Nagios XI »
reviewer0725215
Manager, Information Technology Monitoring at a tech services company
We didn't get good answers from the solution's technical support.
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
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 »
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 »
Nishith Vyas
Sr. System Administrator at Guj Info Petro Limited
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 »
David Pratt
Senior DevOps Engineer Individual Contributor at EML Payments Ltd
Technical support is generally good. I would rate them a four out of five.
Read full review of Nagios XI »
Anonymous User
Software Test Engineer at a comms service provider
I didn’t require any service as the documentation is good and most questions are answered on any number of forums.
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 »
Manoj Nair
Tech consultant at select softwares
No vendor involvement
Read full review of Nagios Core »
Hattab Mahdi
Assistant Director at unpa
We haven't needed to contact support since we have a very big, strong senior engineering team. We have very good...
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
Solutions Architect at Blue Telecom Consulting
They have very accurate and fast support.
Read full review of Nagios XI »
Anonymous User
IT-OSS Manager at a comms service provider
Because we are working in Iran, we have embargoes, and this means we don't have any support from Nagios support. As a...
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 »

Review 1 of 30

Aaron Melendez
Cybersecurity Analyst / Third-Party Risk Analyst at San Jacinto Community College
I would rate their support ten out of ten.
Read full review of Tenable Vulnerability Management »
Mani Bommisetty
Infrastructure patching Manager at a manufacturing company
Technical support from Tenable is rated six out of ten. It needs improvement in response time and addressing feature...
Read full review of Tenable Vulnerability Management »
Md. Shahriar Hussain
Information Security Analyst at Banglalink
There were no delays from customer support. They usually give instant responses for both online and local support.
Read full review of Tenable Security Center »
OndrejKOVAC
Solution engineer at EXPERTience
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 »
Joao Manso
CEO at a tech services company
The technical support is fast and efficient, and I am satisfied with it. I would rate their support nine out of ten.
Read full review of Tenable Vulnerability Management »
Yogeswaran Neelagandan
Key Account Manager at Uniware
Customer support is a challenge. Tenable charges extra for it, which means clients have to buy the license separately...
Read full review of Tenable Vulnerability Management »
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 »
Amit Goyal
Consultant at Tata Consultancy Services
We have had some issues with technical support.
Read full review of Tenable.io Container Security »
François PICHARD
Solution and Demand Manager at SFR
I have not used the support from Tenable SC.
Read full review of Tenable Security Center »
VictorAkidiva
Security Architect at ModusBox
Technical support has been excellent and provides a lot of support when needed.
Read full review of Tenable Security Center »
Abhik Chatterjee
Senior Manager at Capgemini
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 »
Harshal Deshmukh
CEO and Managing Director at Digidata Infsystems Private Limited
We haven't yet contacted Tenable's technical support because we have a good team trained in Tenable tools. We don't...
Read full review of Tenable.io Web Application Scanning »
Jahanzeb Feroze Khan
Assistant Manager Network Security at Institute of Business Administration, Karachi
The technical support is not very good. We didn't get a good response when we contacted them. We had to go through...
Read full review of Tenable Security Center »
Anonymous User
President and CEO, Founder Executive at SecuSolutions Co., Ltd.
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
Information Security Engineer at a tech services company
The support, as well as the portal, is very good.
Read full review of Tenable Nessus »
Anonymous User
Cyber Security Analyst at a non-tech company
We don't have many issues.
Read full review of Tenable Vulnerability Management »
Jonathan-Pereira
Cyber Security Architect at a comms service provider
Tenable services in Brazil are regional services. The global services would be rated around nine, while the global...
Read full review of Tenable.io Web Application Scanning »
Anonymous User
Security Engineer at a media company
The technical support has been very useful. They are helpful. I rate the technical support from Tenable Nessus a four...
Read full review of Tenable Nessus »
Anonymous User
Ingeniero de proyectos de TI at a tech services company
I've never directly dealt with technical support. I can't speak to how knowledgeable or responsive they are. I've...
Read full review of Tenable Vulnerability Management »
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 »
Amine BEYAOUI
Senior Partner / Co-Founder at SKYTEK
Technical support does what it should. The solution is pretty straightforward and simple. As such, as with all...
Read full review of Tenable Security Center »
Dobrisa Dobrenic
Assistant Director for Computing and Network infrastructure at SRCE
We haven't contacted Tenable Nessus for assistance or questions because we haven't encountered any serious issues,...
Read full review of Tenable Nessus »
Anonymous User
Sr. Principal IT Architect at a manufacturing company
We think technical support is pretty good. We have specific needs as defense contractors and they're able to meet...
Read full review of Tenable Security Center »
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 »
Anonymous User
IT Security Operations Analyst at a manufacturing company
Technical support is good. They provided information that is needed.
Read full review of Tenable Nessus »
Anonymous User
Program Manager at a tech services company
Their technical support is good. Because I don't give out tens much for anything, I would say in the eight to nine...
Read full review of Tenable Security Center »
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 »
VishalShah
Senior Information Security Engineer at a consultancy
Technical support requires constant follow up and that is an issue. Once they are made aware of an issue, it takes...
Read full review of Tenable Vulnerability Management »
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 Specialist at a security firm
Technical support has been good. They respond quite quickly.
Read full review of Tenable Vulnerability Management »

Review 1 of 30

Technical Support

No Data Available

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