Compare Nagios vs Tenable

Nagios

Based on 126 reviews.

Tenable

Based on 249 reviews.

Latest Research

Buyer's Guide

Nagios XI vs. Zabbix

September 2026

Zabbix vs. Nagios XI

Updated: September 2026

Buyer's Guide

Nagios Core vs. Nagios XI

September 2026

Nagios XI vs. Nagios Core

Updated: September 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

2 reviews

Nagios Core

3 reviews

Nagios Network Analyzer

0 reviews

Tenable Nessus

10 reviews

Tenable Security Center

6 reviews

Tenable Vulnerability Management

7 reviews

Top Industries

Outsourcing Company

10%

Comms Service Provider

10%

Financial Services Firm

Construction Company

Financial Services Firm

10%

Manufacturing Company

Outsourcing Company

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 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 »
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 »
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 »
FakhruddinLokhandwala
Solutions Architect at NTT
I rate the technical support an eight out of ten.
Read full review of Nagios XI »
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 »
Sumanth Arshanapally
Senior Analyst at a tech vendor
I did not use the support from the vendor.
Read full review of Nagios XI »
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 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
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
Network Engineer at a tech services company
I have not needed to contact technical support. Everything installed easily and it works fine.
Read full review of Nagios XI »
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
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 »
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 »
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 »
Anonymous User
Solutions Architect at Blue Telecom Consulting
They have very accurate and fast support.
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 »
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 »
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 »
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 »
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 »
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 »
UweBergemann
Administrator at self-employed
I have not contacted technical support for the solution.
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 »
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
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
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 »
Michael Nbwiga
IT CIO at Kimfay
We have not been in contact with technical support.
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
Manager, IT at kas
For any problem, we Google it to easily find a solution.
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 »

Review 1 of 30

Yusuf-Hashmi
Sr. Director - Group Head - IT Security (CISO) at Jubilant Organosys Ltd., India, Leading Chemical M
I get the standard support that comes with all Tenable licenses. There isn't specialized support for Tenable.sc. It's...
Read full review of Tenable Security Center »
Daniel_Ndiba
Assistant Manager - Cyber & Cloud Security at a financial services firm
Their technical support is quite good, and they're very responsive. If there is any issue they perform quite quickly....
Read full review of Tenable Security Center »
Mahmoud Elhamaymy
Professional services team lead at a tech services company
I have dealt with technical support once. They were very good and very responsive.
Read full review of Tenable.io Web Application Scanning »
SumeshKumar
Manager Cloud Security at Hitachi Systems, Ltd.
Tenable Cloud Security's technical support is good. They can help you out if you get stuck with some issues.
Read full review of Tenable Cloud Security »
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 »
Antonio Scola
Owner at SUNLIT TECHNOLOGIES
The support provided by the solution is reasonable. It is not terrific customer support, but it works.
Read full review of Tenable.io Container Security »
Renato Jager
CIO at Oakmount
The solution's tech support is not excellent, but it is good enough.
Read full review of Tenable Lumin »
HarshBhardiya
SOC Engineer at a outsourcing company
The technical support is good yet could improve in terms of response time. The feedback and reply times should be...
Read full review of Tenable Nessus »
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 »
Kevin Mwangi
Cyber Security Consultant at a tech services company
I've had varied experiences with Tenable support. The support service should be faster or provide better quality...
Read full review of Tenable Security Center »
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 »
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 »
Anonymous User
Assistant Manager of Information Security at a pharma/biotech company
I can say that I am satisfied with Tenable Nessus' support and customer relations, which is why I'm still with the...
Read full review of Tenable Nessus »
Janakiraman Elumalai
Information Technology Security Specialist at Digitaltrack
The customer service and support are good.
Read full review of Tenable One Exposure Management Platform »
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 »
Fatjon Celaj
Network Security Delivery Manager at alascom
The technical support was responsive and helpful. We were trying different integrations and needed some assistance.
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 »
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 »
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 »
Hatem Langar
Security Analyst at TOPNET
Tenable's technical support is good.
Read full review of Tenable Security Center »
Anonymous User
Director - Information Risk Management at a consultancy
Tenable's technical support is the best I've ever had for any product. We have paid for something called Elite...
Read full review of Tenable SecurityCenter Continuous View [EOL] »
Anonymous User
Information Security Architect at Injazat Data Systems
The technical support is good and provides a quick response whenever contacted by us.
Read full review of Tenable Security Center »
Sandip Deshmukh
Cyber Security Expert at Birlasoft IndiaLtd.
I'm satisfied with Tenable's technical support.
Read full review of Tenable Security Center »
Pov Men
Network Security Engineer at np secure
The customer service/technical support for the solution is very good.
Read full review of Tenable Vulnerability Management »
Anonymous User
Information Security Analyst at a retailer
I rate Tenable support 10 out of 10. They're top-of-the-line. It's the best support I've worked with so far.
Read full review of Tenable Nessus »
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
Security Specialist at a security firm
Technical support has been good. They respond quite quickly.
Read full review of Tenable Vulnerability Management »
Anonymous User
Security Specialist at a security firm
In general, it is fast. In some cases, we need L3 support, which can take some time, but overall, it is really fast....
Read full review of Tenable.io Web Application Scanning »
HARI EDARA
IT Manager at State of Texas
The customer service is good. The support team is very responsive.
Read full review of Tenable Vulnerability Management »
Ladislav Solc
Managing partner at a tech services company
We communicated via email to solve our issue. The experience was quite good for us.
Read full review of Tenable Nessus »

Review 1 of 30

Technical Support

No Data Available

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