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Kali Linux vs Red Hat Enterprise Linux (RHEL) comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Oct 21, 2025

Review summaries and opinions

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

ROI

Sentiment score
8.5
Kali Linux provided cost-effective vulnerability testing, enhancing system security and efficiency, while integrating with DevOps and facilitating faster learning.
Sentiment score
6.9
RHEL enhances ROI with competitive pricing, stability, automation, and security, reducing costs and increasing operational efficiency for users.
Integrating Kali Linux with DevOps tools has resulted in reduced operational costs due to automated test cases, making it a worthwhile investment with significant returns by decreasing the attack surface area and the frequency of attack incidents.
If we had installed it on-premises or through other means, it would have incurred significant money and effort to create the VMs, deploy it on machines, and then delete and format it after use.
I have saved time by avoiding the lag I sometimes face on the TryHackMe in-built machine, and I have learned more efficiently.
A long lifecycle is key to having a good return on investment.
Being able to transform common manual tasks that previously took all day into processes that take an hour, half an hour, or even less, demonstrates clear value.
Red Hat Enterprise Linux has saved us time and increased productivity.
 

Customer Service

Sentiment score
4.6
Kali Linux support relies on active community forums, offering reliable guidance and documentation, with limited traditional support.
Sentiment score
7.1
Red Hat Enterprise Linux support is responsive and effective, though some suggest improvements for quicker resolution of complex issues.
Since most of the tools and other things are community-based, the documentation and other community support are very good.
Red Hat Enterprise Linux (RHEL) support is great, as they go beyond their duty to help resolve issues and provide solutions even for third-party software such as XRDP.
When we do contact customer service, they are generally very knowledgeable and well-versed in our size.
Usually, I send the information, and they have something for me within hours, sometimes even minutes.
 

Scalability Issues

Sentiment score
7.0
Kali Linux offers strong scalability, efficiently supporting single to multiple users for both personal and professional environments.
Sentiment score
7.3
Red Hat Enterprise Linux excels in scalability, seamlessly managing large infrastructures and integrating with diverse cloud and on-premises environments.
Many of our applications scale really well, with some having several hundreds of VMs, which we couldn't accomplish on Windows.
Red Hat Enterprise Linux (RHEL) scales very well with the growing needs of our company.
Red Hat Enterprise Linux (RHEL) handles increases in users, applications, or data smoothly, which is why we use it for all our projects, as it provides us with confidence.
 

Stability Issues

Sentiment score
7.8
Kali Linux is highly praised for its stability and reliability, particularly in virtualization, despite occasional system-specific issues.
Sentiment score
7.7
Red Hat Enterprise Linux is favored for stability, security, and support, ideal for business-critical operations despite occasional third-party issues.
It works consistently with minimal downtime and very few bugs or glitches.
It just works, and that's really the key factor; I can't remember the last time we had a system go down and had to restore it due to a bad patch.
We've not had a service outage with Red Hat in six years.
 

Room For Improvement

Kali Linux needs better automation, AI integration, user interfaces, security, and community engagement for improved user experience and compatibility.
RHEL requires improvement in upgrade simplicity, application compatibility, support, cloud integration, training accessibility, and transitioning from CentOS.
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.
Making Kali Linux more customizable would allow users to personalize it to their style.
It's still advertised as a Linux distro used only for security testing, and many of the tools run as root by default or with the highest privileges.
Addressing these limitations would significantly enhance the operating system's flexibility and efficiency.
The built-in security features of Red Hat Enterprise Linux were insufficient for our needs, necessitating the implementation of supplementary security measures.
By providing pre-installed, native automation tools within the operating system, Red Hat would streamline processes and improve user efficiency.
 

Setup Cost

Kali Linux is free and open-source, offering cost-effective tools without licensing fees, except for potential setup costs.
RHEL pricing and licensing are costly for small businesses, but offer value and stability for larger enterprises.
Kali Linux is free software, an operating system that's available to download without any cost or licensing fees.
My experience with pricing, setup costs, and licensing for Kali Linux has been positive, as it operates under an open-source model.
The pricing and the deployment, resource usage are all spot on and clearly defined, making it helpful and useful for me to deploy and calculate costs.
It may be considered expensive compared to other solutions like CentOS or Ubuntu, which offer some of the same features without additional costs.
Its pricing has room for improvement because it's more expensive in the local market due to purchasing power parity in India.
Windows Servers base their cost on the number of users and have high licensing fees, while Red Hat Enterprise Linux offers free versions alongside its paid, supported versions.
 

Valuable Features

Kali Linux offers robust tools, security, scalability, and efficiency, enhancing penetration testing and reducing cybersecurity threats effectively.
RHEL is favored for its stability, security, automation, and integration, benefiting businesses with efficient management and compliance.
Kali Linux has positively impacted my organization by improving efficiency in penetration testing; its open-source nature permits extensive customization and inclusion of numerous comprehensive pre-installed tools, contributing to a secure network environment with effective monitoring of network applications.
Kali Linux has the capability of real-time data scanning for vulnerability assessment for backend services.
The overall focus on security in Kali Linux is what I find most useful.
It also has strong security features, is OIS and FIPS certified, and has built-in Linux security configurations.
There is also no downtime.
The operating system allows for the simple addition of kernels, modules, and other applications, making it highly adaptable to various needs.
 

Categories and Ranking

Kali Linux
Ranking in Operating Systems (OS) for Business
11th
Average Rating
8.6
Reviews Sentiment
7.2
Number of Reviews
17
Ranking in other categories
No ranking in other categories
Red Hat Enterprise Linux (R...
Ranking in Operating Systems (OS) for Business
1st
Average Rating
8.8
Reviews Sentiment
7.1
Number of Reviews
366
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of October 2025, in the Operating Systems (OS) for Business category, the mindshare of Kali Linux is 3.0%, up from 0.8% compared to the previous year. The mindshare of Red Hat Enterprise Linux (RHEL) is 8.6%, down from 11.8% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Operating Systems (OS) for Business Market Share Distribution
ProductMarket Share (%)
Red Hat Enterprise Linux (RHEL)8.6%
Kali Linux3.0%
Other88.4%
Operating Systems (OS) for Business
 

Featured Reviews

Aditya Pillai - PeerSpot reviewer
Has helped me learn penetration testing through hands-on tasks and faster workflows
It would be helpful if Kali Linux could be involved in more systems or laptops. Windows is a standard for many laptops and comes pre-installed on many devices available in the market. If Kali Linux could do the same and increase their reach to better areas, it would be beneficial. They could improve Kali Linux's UI/UX. They have been following a standard UI/UX. They could add more options, similar to how CachyOS distro of Arch Linux has many different UI options to select from. Making Kali Linux more customizable would allow users to personalize it to their style. Many users utilize Kali Linux through virtual machines. Sometimes Kali Linux has issues detecting hardware such as inbuilt or external Wi-Fi adapters. Improving device detection would be beneficial.
Bruce Lundberg - PeerSpot reviewer
Reliable patch management, high uptime, and incredible knowledge base
In terms of security, it does a lot of things that most people still turn off. SELinux is turned on by default. They have pretty good firewall rules in their defaults. The audit rules always take tweaking, but, overall, it comes out of the box not too bad. I used to write scripts to harden them from there. There are multiple ways to provision and patch. You have everything from local repositories to doing it by hand. Their knowledge base is incredible. There is so much information out there. It has never taken me longer than 30 minutes to find an answer to anything, even very tough ones. One company I worked for was a security company, and we did a lot of patching on everything. It was designed around security and email hosting, and uptime was pretty much whatever we wanted it to be. I have had a couple of times when the uptime was bad, but it was caused by a third-party solution. In fact, the Norton antivirus was definitely the worst. Red Hat had nothing to do with it.
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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
Comms Service Provider
13%
Computer Software Company
12%
University
12%
Educational Organization
11%
Computer Software Company
15%
Manufacturing Company
10%
Financial Services Firm
9%
Government
8%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business9
Midsize Enterprise1
Large Enterprise8
By reviewers
Company SizeCount
Small Business83
Midsize Enterprise47
Large Enterprise249
 

Questions from the Community

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?
My experience with pricing, setup costs, and licensing for Kali Linux has been positive, as it operates under an open-source model with setup costs primarily related to hardware and virtual machine...
What needs improvement with Kali Linux?
There are areas for improvement in Kali Linux, particularly regarding its use of the Linux kernel, which requires external additional patching, and the fact that network services are disabled by de...
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 Red Hat Enterprise Linux (RHEL)?
It is open source. We can customize it as per our requirements.
What is your experience regarding pricing and costs for Red Hat Enterprise Linux (RHEL)?
My experience with pricing, setup costs, and licensing is that I strongly believe Red Hat Enterprise Linux (RHEL) offers a good relationship between value and price, and despite it being quite pric...
 

Also Known As

No data available
Red Hat Enterprise Linux, RHEL, Red Hat Enterprise Linux (RHEL) for AWS
 

Overview

 

Sample Customers

Information Not Available
Travel Channel, Mohawk Industries, Hilti, Molecular Health, Exolgan, Hotelplan Group, Emory University, BlueCross BlueShield of North Carolina, HCA Healthcare, Paychex, UPS, Intermountain Healthcare, Brinker International, TransUnion, Union Bank, CA Technologies
Find out what your peers are saying about Kali Linux vs. Red Hat Enterprise Linux (RHEL) and other solutions. Updated: September 2025.
872,655 professionals have used our research since 2012.