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Kali Linux vs Windows Server comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Aug 7, 2024

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
5.9
Kali Linux enhances security testing, reduces costs, boosts ROI, and saves resources with automation and AWS Marketplace deployment.
Sentiment score
5.5
Windows Server boosts efficiency and resource management, with users reporting significant cost reductions and improved virtualization and Azure services.
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.
SWE-1 at a tech vendor with 10,001+ employees
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.
Cloud Security Architect at a tech services company with 10,001+ employees
I have saved time by avoiding the lag I sometimes face on the TryHackMe in-built machine, and I have learned more efficiently.
Associate Consultant at a consultancy with 10,001+ employees
We're very competitive commercially and technically because of it.
IT-Operation Head at Granules India Ltd
We've seen value in Windows Server because the systems work smoothly without any problems.
L3 Engineer at Momentum Metropolitan Holdings Limited
Windows Server offers excellent value for money, particularly when compared to alternatives.
Security Engineer at ProVision
 

Customer Service

Sentiment score
4.9
Kali Linux relies on community support with extensive documentation and forums, despite mixed experiences regarding official assistance.
Sentiment score
6.2
Customer service is generally effective, but technical support quality varies, and experiences with Microsoft are mixed.
Since most of the tools and other things are community-based, the documentation and other community support are very good.
Cloud Security Architect at a tech services company with 10,001+ employees
I was able to solve the problems I was experiencing.
Product security engineer at a tech vendor with 10,001+ employees
Our in-house team can also solve most issues.
IT-Operation Head at Granules India Ltd
If you go through a partner who sells or supports Windows, the support could be around seven out of ten, because Windows relies on these partners for assistance.
Head of Major Account Sales Operation 1 at a manufacturing company with 1,001-5,000 employees
Microsoft's technical support for Windows Server has been lacking, with rare responses even with premium support.
Security Engineer at ProVision
 

Scalability Issues

Sentiment score
7.4
Kali Linux's scalability supports personal and company use, efficiently handling multiple instances and cloud deployment with professional licenses.
Sentiment score
7.6
Windows Server is flexible and scalable, efficiently adapting to varying organizational sizes despite some management complexity.
Regarding the scalability of Kali Linux for my work and projects, whenever I was conducting brute force attacks and provided more than two or three million lines of payload, the system would freeze.
Product security engineer at a tech vendor with 10,001+ employees
I find Kali Linux very scalable.
Senior Solution Architect & Delivery Lead at a tech services company with 10,001+ employees
If I need more workload, I would probably need more CPU, and Kali Linux will handle that properly.
Consultant at Cognizant
I've worked in companies with 20,000 to 100,000 users, and it scales beautifully without issues.
Manager, Information & Cloud Systems at a consultancy with 1,001-5,000 employees
It's definitely scalable.
IT-Operation Head at Granules India Ltd
The solution is used extensively in our organization, and we have plans to increase the usage.
Project Engineer at CDAC
 

Stability Issues

Sentiment score
7.9
Kali Linux is praised for its stability in virtualization, with high ratings and satisfaction from Raspberry Pi users.
Sentiment score
7.5
Windows Server is highly stable and reliable, with improvements since 2012, often rated 8-10 out of 10 by users.
Kali Linux is stable for my use cases, though not the latest version.
Product security engineer at a tech vendor with 10,001+ employees
Kali Linux is very stable for my needs.
Consultant at Cognizant
We have experienced no blue screens or crashes and often achieved an uptime of 2,000 to 3,000 days without any issues whatsoever.
Security Engineer at ProVision
Stability-wise, I rate the solution a ten out of ten.
Manager at Accenture company
The tool is stable.
ITSM Administrator & Analyst at Ministry of Interior
 

Room For Improvement

Kali Linux needs user-friendly enhancements, better tool documentation, improved compatibility, streamlined processes, and refined security features with AI integration.
Windows Server users seek improved security, better integration, usability, optimization, pricing, automation, documentation, patching, and technical support.
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.
Senior Technical Manager at a tech vendor with 10,001+ employees
I face significant challenges with Kali Linux regarding a major issue with the Grub loader becoming corrupted, which makes it very difficult to recover data.
Senior Solution Architect & Delivery Lead at a tech services company with 10,001+ employees
Making Kali Linux more customizable would allow users to personalize it to their style.
Associate Consultant at a consultancy with 10,001+ employees
From a security perspective, sometimes, malware attacks and hackers take advantage of the tool's vulnerabilities.
Manager, Strategic Alliances at Softcell Technologies Limited
Deploying antivirus and firewall software on the server is advisable, but having an external firewall adds an extra layer of security.
Project and Service Delivery Manager Cloud at MANAPPURAM COMPTECH AND CONSULTANTS LIMITED
Windows Server needs to improve its speed and stability.
Oracle business analyst at Sensience
 

Setup Cost

Kali Linux offers a cost-effective, open-source solution for enterprises, eliminating licensing fees and featuring minimal setup costs.
Enterprise buyers struggle with Windows Server licensing due to its complexity, varied pricing, and high costs compared to Linux.
Kali Linux is free software, an operating system that's available to download without any cost or licensing fees.
Associate Consultant at a consultancy with 10,001+ employees
I simply create a VM, so there are no costs involved.
Senior Solution Architect & Delivery Lead at a tech services company with 10,001+ employees
My experience with pricing, setup costs, and licensing for Kali Linux has been positive, as it operates under an open-source model.
SWE-1 at a tech vendor with 10,001+ employees
It is quite expensive.
Head of Major Account Sales Operation 1 at a manufacturing company with 1,001-5,000 employees
Previously, a Windows Server with two processors cost around two 154 euros annually, but now it is estimated to be around 3,000 to 4,000 euros for the same configuration.
Security Engineer at ProVision
On a scale of one to ten, with ten being the most expensive, I rate it ten out of ten.
Manager, IT Security at Averis Sdn Bhd
 

Valuable Features

Kali Linux offers an extensive toolkit for cybersecurity with pre-installed tools, scalability, customization, and efficient security testing capabilities.
Windows Server excels in scalability, security, and integration, offering features like Active Directory and seamless Microsoft tool compatibility.
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.
SWE-1 at a tech vendor with 10,001+ employees
A unique and really helpful feature of Kali Linux, compared to other operating systems, is that many of the offensive security tools are already pre-configured and pre-installed.
Product security engineer at a tech vendor with 10,001+ employees
Kali Linux positively impacts my organization by allowing us to monitor changes and security posture for the company.
Consultant at Cognizant
Windows Server is a stable and scalable solution.
IT head at Ficobank
The most valuable features of the solution stem from the fact that every Microsoft product is scalable, flexible, secure, and available on a certain budget.
Manager, Strategic Alliances at Softcell Technologies Limited
The IP directory is the most valuable feature.
Connectivity Platform Cyber Security Specialist at BASF Business Services GmbH
 

Categories and Ranking

Kali Linux
Ranking in Operating Systems (OS) for Business
10th
Average Rating
8.6
Reviews Sentiment
6.8
Number of Reviews
24
Ranking in other categories
No ranking in other categories
Windows Server
Ranking in Operating Systems (OS) for Business
5th
Average Rating
8.2
Reviews Sentiment
6.8
Number of Reviews
195
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of January 2026, in the Operating Systems (OS) for Business category, the mindshare of Kali Linux is 3.2%, up from 1.5% compared to the previous year. The mindshare of Windows Server is 9.3%, up from 8.9% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Operating Systems (OS) for Business Market Share Distribution
ProductMarket Share (%)
Windows Server9.3%
Kali Linux3.2%
Other87.5%
Operating Systems (OS) for Business
 

Featured Reviews

Ciyagi Ciyagi - PeerSpot reviewer
Senior Solution Architect & Delivery Lead at a tech services company with 10,001+ employees
Runs efficiently across devices and streamlines penetration testing workflows
Kali Linux could be improved by including more tools. I would personally like to see improvements in Kali Linux, particularly regarding Grub issues that sometimes occur when installing the VM. Additionally, I have experienced problems when updating Kali Linux from a higher version to a lower version, which resulted in crashes. These Grub issues should be resolved. I face significant challenges with Kali Linux regarding a major issue with the Grub loader becoming corrupted, which makes it very difficult to recover data.
GS
Manager, Information & Cloud Systems at a consultancy with 1,001-5,000 employees
Long-standing experience improves reliability and security, making it a trusted platform
It's difficult to see improvements when using it daily. They improved compatibility with other platforms, such as Linux. One improvement I was thinking about some years ago was the ability to manage an on-premises server from Azure. Now, they have created Azure Arc, and we are using it as a very good way of managing on-premises servers. What can be improved is on the Azure side. With Active Directory on the server side and Entra ID on the Azure side in our hybrid environment, we find issues with data syncing to Entra ID. In Entra ID, Microsoft omitted some parameters. In Active Directory, you can put an expiring date to an account, but you cannot do that in Entra ID. We have other means of doing that, but it's common to have consultants working for six months, requiring account expiration or renewal processes. The Entra ID Connect syncing tool could be improved. Though they moved the service to Azure and use an agent instead of having a dedicated server, it remains cumbersome to set up due to the differences between Entra ID and Active Directory.
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Top Industries

By visitors reading reviews
University
13%
Computer Software Company
13%
Comms Service Provider
13%
Educational Organization
11%
Computer Software Company
11%
Comms Service Provider
10%
Manufacturing Company
8%
University
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business10
Midsize Enterprise2
Large Enterprise14
By reviewers
Company SizeCount
Small Business78
Midsize Enterprise41
Large Enterprise88
 

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 cost, and licensing has been good because I am using the free version.
What needs improvement with Kali Linux?
I think there are a lot of efforts which are really great for improving Kali Linux. Increasing the tutorials and the help inside Kali Linux would make it more useful.
What needs improvement with Windows Server?
The user interface of Windows Server needs improvement, especially when working with users, user accounts, and groups. There are multiple ways to accomplish tasks that do not align completely, so t...
What is your primary use case for Windows Server?
I integrated Windows Server in my infrastructure. We use Hyper-V technology extensively, as it is very important for us, and it functions quite well.
 

Comparisons

 

Overview

 

Sample Customers

Information Not Available
Rakuten, Rackspace, Tyco
Find out what your peers are saying about Kali Linux vs. Windows Server and other solutions. Updated: December 2025.
879,927 professionals have used our research since 2012.