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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
5.8
Kali Linux offers cost-effective security tools with DevOps integration, saving time and resources without upfront costs.
Sentiment score
5.0
Windows Server enhances efficiency, reducing support costs by 10-70%, valued for virtualization, integration, security, and operational stability.
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
Kali Linux is a time-saving and cost-saving solution.
Senior Solution Architect & Delivery Lead at a tech services company with 10,001+ employees
You get a standard platform that is very secure and stable.
Manager, Information & Cloud Systems at a consultancy with 1,001-5,000 employees
The return on investment is evident as having efficient resources to manage our infrastructure means we are less dependent on costly external support from Microsoft.
Executive Vice President Technology at InfoEdge India Ltd
We calculate ROIs for several solutions, including Windows Server, and propose the results to our customers to convince them why they should upgrade.
Team Manager at Waters Corporation
 

Customer Service

Sentiment score
5.2
Kali Linux users rely on active community forums and documentation for effective support and troubleshooting, with generally positive experiences.
Sentiment score
6.3
Windows Server support is praised for expertise and responsiveness but experiences vary, with some users finding delays and inconsistencies.
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
Customer support for Kali Linux relies heavily on community documentation due to its open-source nature.
Assistant Consultant at cmc
They resolved our problems within the defined SLA.
Relationship Manager at Cognizant
When I had an issue with Hyper-V, the support was excellent.
Systems technician. IT Office at LNU
The technical support from Microsoft is one of the best, though there can be challenges when it comes to priority zero or critical issues, where the queue can be longer.
Executive Vice President Technology at InfoEdge India Ltd
 

Scalability Issues

Sentiment score
7.6
Kali Linux offers scalability across environments, supporting devices efficiently with positive performance linked to available hardware resources.
Sentiment score
7.4
Windows Server efficiently scales from small to large user bases, supporting resource adjustments for smooth organizational growth.
It is lightweight compared to Windows and scales well, especially in a VM environment.
Assistant Consultant at cmc
You can use it on cloud, VPS, and on-premises.
Security Researcher at a consultancy with 10,001+ employees
I would describe Kali Linux's scalability as very scalable because I can deploy it on a range of different machines, whether that is my laptop or using maybe Raspberry Pi or Android.
Cloud Ops Lead at a tech vendor with 10,001+ employees
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
We use it everywhere, and it serves approximately two thousand users in our company as a backend service.
System Engineer at Alnajat charity
Windows Server is highly scalable; I can upgrade the hardware capacity or storage capacity smoothly.
Senior Consutant at HCLSoftware
 

Stability Issues

Sentiment score
8.0
Kali Linux is praised for stability, especially in virtualization, with regular updates and effective maintenance by Offensive Security.
Sentiment score
7.4
Windows Server is praised for its stability, with recent versions highly reliable despite occasional update challenges.
We utilize snapshots for penetration testing, allowing us to revert back if anything goes wrong, which is one of its good features.
Assistant Consultant at cmc
Due to the huge user base that uses it, it is kept up to date regularly.
Cloud Ops Lead at a tech vendor with 10,001+ employees
Kali Linux is stable for my use cases, though not the latest version.
Product security engineer at a tech vendor with 10,001+ employees
Stability-wise, I rate the solution a ten out of ten.
Manager at Accenture company
The stability is better with the newer versions like 2019.
System Engineer at Alnajat charity
Very rarely do I see any blue screens or crashes.
Senior Consutant at HCLSoftware
 

Room For Improvement

Kali Linux needs improved usability, stability, and community support, with enhancements in security, documentation, and AI integration.
Windows Server users cite security, performance, integration issues, setup complexity, high cost, and frequent maintenance as key concerns.
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
If there were video courses attached to how to safely use it, especially for absolute beginners with no previous experience using Linux operating systems, I think that could be very useful.
Cloud Ops Lead at a tech vendor with 10,001+ employees
If Windows could make the OS part lighter, especially starting and restarting the Windows Server, which needs to be quick, then it would be great since this is an area where the tool lacks a bit.
Manager at Accenture company
The support team is getting worse in terms of expertise.
Manager, IT Security at Averis Sdn Bhd
We can work with both virtual and physical setups.
AVP at a financial services firm with 1,001-5,000 employees
 

Setup Cost

Kali Linux is cost-effective for enterprises, primarily free but offers a perpetual license option for enterprise versions.
Windows Server licensing is complex and costly, but it's popular for its features despite pricing concerns compared to alternatives.
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
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.
Cloud Security Architect at a tech services company with 10,001+ employees
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
Microsoft offers product pricing with licenses per processor and CAL licenses for accessing.
Manager, Information & Cloud Systems at a consultancy with 1,001-5,000 employees
The cost associated with Windows Server—considering pricing, licensing, and setup—is expensive, no doubt.
Executive Vice President Technology at InfoEdge India Ltd
 

Valuable Features

Kali Linux excels in security tools, seamless installation, and customization, making it ideal for ethical hackers and IT professionals.
Windows Server excels with Active Directory, Hyper-V, integration, security, and usability, making it ideal for enterprise solutions.
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
I can manage the firewalls on the server easily, open or close ports to manage security traffic, and use encryption on the hard disk to keep data secure.
Systems technician. IT Office at LNU
FTP functionality does not require additional payment because Windows Server already includes the feature, reducing the costs of these tools.
Team Lead at Regnology
If you need to include an email server, you can't ask about features individually since all features are necessary.
Manager, IT Security at Averis Sdn Bhd
 

Categories and Ranking

Kali Linux
Ranking in Operating Systems (OS) for Business
10th
Average Rating
8.6
Reviews Sentiment
6.9
Number of Reviews
25
Ranking in other categories
No ranking in other categories
Windows Server
Ranking in Operating Systems (OS) for Business
4th
Average Rating
8.2
Reviews Sentiment
6.7
Number of Reviews
196
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of May 2026, in the Operating Systems (OS) for Business category, the mindshare of Kali Linux is 4.1%, up from 2.2% compared to the previous year. The mindshare of Windows Server is 7.5%, down from 9.2% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Operating Systems (OS) for Business Mindshare Distribution
ProductMindshare (%)
Windows Server7.5%
Kali Linux4.1%
Other88.4%
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
12%
Construction Company
12%
Comms Service Provider
11%
Computer Software Company
9%
Comms Service Provider
11%
University
8%
Computer Software Company
7%
Financial Services Firm
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business10
Midsize Enterprise2
Large Enterprise17
By reviewers
Company SizeCount
Small Business78
Midsize Enterprise41
Large Enterprise89
 

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 for Kali Linux has been that it was free to use.
What needs improvement with Kali Linux?
I think Kali Linux is good, but there is a widespread misunderstanding related to Kali Linux because many people believe Kali Linux is a tool for hackers and that anything can be hacked using it. T...
What needs improvement with Windows Server?
I cannot answer regarding which metrics I use to measure the effectiveness of Microsoft Defender for IoT because I have to check with my technical team. I have been fulfilling a role as IT manager ...
What is your primary use case for Windows Server?
What suits me the most is that for all my OT environment, I can manage all those devices in one secure portal from Microsoft.
What is your experience regarding pricing and costs for Windows Server?
I think the licensing model of Microsoft products, including Windows Server, is not cheap. Microsoft has been guiding us for all the products toward a subscription model instead of a buying model. ...
 

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: April 2026.
893,221 professionals have used our research since 2012.