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CentOS vs Kali Linux comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Aug 3, 2025

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

CentOS
Ranking in Operating Systems (OS) for Business
9th
Average Rating
8.4
Reviews Sentiment
7.1
Number of Reviews
69
Ranking in other categories
No ranking in other categories
Kali Linux
Ranking in Operating Systems (OS) for Business
11th
Average Rating
8.8
Reviews Sentiment
7.7
Number of Reviews
14
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of September 2025, in the Operating Systems (OS) for Business category, the mindshare of CentOS is 4.6%, down from 8.1% compared to the previous year. The mindshare of Kali Linux is 2.7%, up from 0.6% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Operating Systems (OS) for Business Market Share Distribution
ProductMarket Share (%)
CentOS4.6%
Kali Linux2.7%
Other92.7%
Operating Systems (OS) for Business
 

Featured Reviews

Mahender Nirwan - PeerSpot reviewer
In-depth documentation available and command-line utility works well
One issue I recently faced, but I think it was due to my IT support guys, was that when the server storage gets full, the service crashes. It's very difficult to regain access and stability in that situation. That could be improved. So, the stability might be improved. But I don't think it's a CentOS-level issue. The system administrators need to come up with a solution for that, but I don't think it's CentOS's fault. I haven't done any research [R&D] on this issue. There's one thing for sure. We recently migrated from CentOS 7 to CentOS 9, and it was a bit difficult. For example, updating Windows is simple; you just download it, and it takes about 15-20 minutes. But that's not the case with migrating from CentOS 7 to 9. We had to back up the entire server, launch a new server, and then restore the backup to the new server. We couldn't directly migrate. I think that was a bit of a problem. The setup and updates are not that new in CentOS.
NilutpalDutta - PeerSpot reviewer
Provides valuable real-time data scanning for vulnerability assessment
We don't know if Kali Linux has the port scanning capability yet, but that is an area of improvement because we are working with DMZ zones and customized ports. If we can add featured customized port scanning and DMZ zone capability, then it will be a very great tool. It might be there, but we are not exploring it yet. We are not exploring 100% of Kali Linux capabilities. If real-time customized port scanning can be added, for example, instead of a default port such as 8080 or 443, if we can use a customized port such as 9876, that capability would be great. The only point that I didn't find on Kali Linux for now is the ability to customize port scanning.

Quotes from Members

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

Pros

"The most valuable feature is the limited resources the solution uses in operation."
"We used the solution as an operating system."
"The product is very efficient when it comes to virtualization."
"I like the command prompt of CentOS. It's very simple."
"CentOS adapts well to many software and applications, providing good compatibility."
"Its performance is most valuable. There is a performance boost as compared to when the applications are run on Windows OS."
"There are a lot of sources on the internet that you can use to solve any issues, and people share their experiences. It's not a closed system"
"The pricing is good. We pay a minimal fee."
"The solution's most valuable feature is that it is very easy to use."
"The interface is good and straightforward to use."
"I'm mostly using for the web security web application, so end map and the troubleshoot will it's my price, and it's available in ColliNX."
"In general, Kali Linux is used for hosting applications, developing new applications, and operating systems. It's also used in containers and nodes. The tool offers a smaller footprint than Windows because it lacks the functionality of graphical user interfaces. One advantage of Kali Linux is its lower maintenance requirements than Windows, with slower update cycles and easier maintenance procedures."
"We use the product for open-source intelligence and identifying vulnerabilities."
"The tools available in Kali Linux are incredibly effective for conducting security assessments."
"I use the tool with Nmap to perform network audits. We use it to find vulnerabilities in our network through attacks. It's for those who want to launch or create viruses or perform attacks on systems. With Kali Linux, you can conduct penetration testing for networks, web applications, and Android mobile apps."
"Kali Linux has the capability of real-time data scanning for vulnerability assessment for backend services, and that is actually very far more valuable."
 

Cons

"It would be ideal if Red Hat would continue the CentOS versions in an open-source format. They seem to be moving away from that. Now only paid versions are available."
"The solution’s stability could be improved."
"The solution is stable, however, it could always be even more stable if possible."
"CentOS is pretty old now, so I wouldn't recommend anyone use it."
"As an open-source solution, there isn't much technical support."
"The solution must improve its security."
"This solution is no longer supported and will not receive any updates going forward."
"In terms of commands, it's all CLI and there isn't any GUI which can make it challenging to use for some people."
"I would like for them to offer more features for the free version in order for users to test them in their internal environment before purchasing."
"From an improvement perspective, it should be made possible for users to learn about the product easily."
"Unfortunately, my current tool runs on Windows 10, and its use is restricted to enterprise versions. Integrating this tool or similar functionalities into Kali Linux for non-enterprise users would be incredibly valuable."
"The only point that I didn't find on Kali Linux for now is the ability to customize port scanning."
"From an improvement perspective, Kali Linux could include more ML to help with academic literature, as it is one of the areas where there are shortcomings in the solution."
"The product should integrate AI and GPT capabilities."
"Any new user or someone without deep expertise won't be able to understand how to scale or manage it"
"I would like to have automation in Kali Linux instead of manually configuring or setting up something in case of an upgrade."
 

Pricing and Cost Advice

"For the enterprise version of CentOS, there is a license required. However, for personal use, I do not need a license."
"There are no licensing fees. CentOS is a free solution."
"The solution is not subscription-based, unlike Red Hat."
"There is no price or licensing required — it's open-source."
"CentOS is an expensive solution. There are other solutions that are rated at the top that are not expensive, such as Red Hat."
"Once you buy the license, Linux will provide you with yearly or monthly patches, so your systems will be scalable for a long time."
"CentOS is an open source that is free of cost."
"There are no licensing costs for CentOS."
"The licensing fee is expensive compared to other products."
"The price is good because Kali Linux already provides a good bundle of tools."
"Kali Linux offers a perpetual license, meaning you pay for it once and can use it. While free versions of Linux are available, Kali Linux, being an enterprise edition, usually comes with a perpetual license. I rate its pricing a five out of ten."
"I have used the free version."
"Kali Linux is a free product, and you don't have to pay for a license."
"There is no need to make any payments towards the licensing costs since it is a solution that is available for free."
"The tool is open-source."
"I use it free of charge."
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Comparison Review

it_user281973 - PeerSpot reviewer
Aug 24, 2017
It's improved our company's system environments that run Oracle databases.
Red Hat is mission critical to our environment Red Hat has improved the mission critical environments running Oracle databases, while CentOS has improved our web environment and MySQL. Oracle and SAP Environment and all HPC environments. 10 years No issues Very stable i don´t find any problem…
 

Top Industries

By visitors reading reviews
Computer Software Company
16%
Manufacturing Company
8%
Comms Service Provider
7%
Educational Organization
7%
Comms Service Provider
13%
Computer Software Company
13%
University
13%
Educational Organization
10%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business29
Midsize Enterprise19
Large Enterprise23
By reviewers
Company SizeCount
Small Business9
Midsize Enterprise1
Large Enterprise5
 

Questions from the Community

Which would you choose - RHEL (Red Hat Enterprise Linux) or CentOS?
Red Hat Enterprise Linux is fantastic. It is an inexpensive solution that has excellent security, performance, and stability, and also lots of features. I specifically like that the solution has fe...
What do you like most about CentOS?
CentOS is very easy to use, and all the commands are user-friendly.
What is your experience regarding pricing and costs for CentOS?
CentOS is a free product with free updates. There are third-party companies available for support, but they charge varying amounts for their services.
What do you like most about Kali Linux?
I use the tool with Nmap to perform network audits. We use it to find vulnerabilities in our network through attacks. It's for those who want to launch or create viruses or perform attacks on syste...
What is your experience regarding pricing and costs for Kali Linux?
Kali Linux offers a perpetual license, meaning you pay for it once and can use it. While free versions of Linux are available, Kali Linux, being an enterprise edition, usually comes with a perpetua...
What needs improvement with Kali Linux?
We don't know if Kali Linux has the port scanning capability yet, but that is an area of improvement because we are working with DMZ zones and customized ports. If we can add featured customized po...
 

Comparisons

 

Also Known As

CentOS 7 (x86_64) - with Updates HVM
No data available
 

Overview

Find out what your peers are saying about CentOS vs. Kali Linux and other solutions. Updated: September 2025.
867,349 professionals have used our research since 2012.