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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
5.7
Kali Linux improves security and efficiency with low-cost tools, offering significant cost savings and optimized resource management.
Sentiment score
5.4
While complex, Windows Server offers efficiency, reliability, and integration benefits, enhancing competitiveness and delivering strong ROI through cost savings.
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
Overall, the gains in productivity, security, and operational efficiency have provided a strong return on investment.
IT at a retailer with 11-50 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
 

Customer Service

Sentiment score
5.0
Kali Linux support relies on community documentation and forums, offering effective assistance despite slower response times compared to commercial options.
Sentiment score
6.3
Windows Server support varies, with some experiencing prompt service while others rely on forums and documentation for help.
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
If we compare support from Microsoft, it is not the same because Kali Linux is open source and we are not paying any license cost.
Assistant Consultant at a tech services company with 11-50 employees
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
7.4
Kali Linux excels in diverse virtual environments, offering scalability and adaptability on platforms like VPS and Raspberry Pi.
Sentiment score
7.4
Windows Server is highly scalable, supports diverse user needs, but has resource demands and improvement potential in cloud environments.
You can use it on cloud, VPS, and on-premises.
Sr. Project Analyst [Cybersecurity] 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
We can include the GitHub repository, install Python code, and create our own machine learning model in Kali Linux.
Assistant Consultant at a tech services company with 11-50 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
Active Directory and Group Policy make it easy to manage a growing number of users and systems from a centralized platform.
IT at a retailer with 11-50 employees
We use it everywhere, and it serves approximately two thousand users in our company as a backend service.
System Engineer at Alnajat charity
 

Stability Issues

Sentiment score
8.0
Kali Linux is praised for stability, reliability, and regular updates, excelling in virtualization with strong maintenance by Offensive Security.
Sentiment score
7.5
Windows Server is highly stable and reliable, praised for seamless performance and improvements over previous versions, despite update concerns.
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
Kali Linux is very stable for my needs.
Consultant at Cognizant
Stability-wise, I rate the solution a ten out of ten.
Manager at Accenture company
It provides reliable performance for critical services such as Active Directory, file service, DNS, and user authentication.
IT at a retailer with 11-50 employees
The stability is better with the newer versions like 2019.
System Engineer at Alnajat charity
 

Room For Improvement

Kali Linux could improve with a user-friendly GUI, enhanced support, better documentation, AI integration, and optimized VM images.
Windows Server needs improved security, stability, cloud integration, simpler UI, better pricing, easier configuration, and broader compatibility 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
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 and appealing for enterprises with its open-source, free access, and comprehensive tool suite.
Enterprise users find Windows Server costly and complex to license, preferring simpler, more competitive pricing compared to Linux.
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
We do not need to pay anything.
Assistant Consultant at a tech services company with 11-50 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
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 offers pre-installed security tools, user-friendly interface, and customization, ideal for ethical hacking and penetration testing.
Windows Server excels in integration, ease of use, security, scalability, and supports enterprise applications with features like Hyper-V and PowerShell.
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
11th
Average Rating
8.6
Reviews Sentiment
6.8
Number of Reviews
26
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
197
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of June 2026, in the Operating Systems (OS) for Business category, the mindshare of Kali Linux is 4.2%, up from 2.3% compared to the previous year. The mindshare of Windows Server is 6.9%, down from 9.3% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Operating Systems (OS) for Business Mindshare Distribution
ProductMindshare (%)
Windows Server6.9%
Kali Linux4.2%
Other88.9%
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.
reviewer2848875 - PeerSpot reviewer
IT at a retailer with 11-50 employees
Centralized controls have improved security and simplify user management across our environment
One area where Windows Server could be improved is in simplifying administration and troubleshooting. While Windows Server is powerful, diagnosing issues related to group policy, DNS, replication, and authentication can sometimes be complex and time-consuming. I would prefer to see more intuitive management dashboards, better built-in monitoring and reporting tools, and integration with cloud service-enhanced automation features for routine administrative tasks. This would further reduce manual effort and improve efficiency. Overall, Windows Server is a reliable platform, but making management and troubleshooting more streamlined would help IT teams save time and improve productivity. Another area for improvement is documentation and update management. While Microsoft provides extensive documentation, finding the most relevant troubleshooting information can sometimes be challenging for complex issues involving Active Directory, DNS, or group policy. Updates are important for security, but some updates require careful testing and planning to avoid unexpected impacts on production environments. More detailed pre-update impact analysis and simplified rollback options would be beneficial. Overall, Windows Server is a robust platform, but improvements in documentation, troubleshooting guidance, update management, and administrative automation would further enhance the experience for IT professionals.
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Top Industries

By visitors reading reviews
University
12%
Construction Company
12%
Comms Service Provider
11%
Educational Organization
8%
Comms Service Provider
10%
Construction Company
9%
Manufacturing Company
8%
Financial Services Firm
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business12
Midsize Enterprise2
Large Enterprise17
By reviewers
Company SizeCount
Small Business79
Midsize Enterprise41
Large Enterprise89
 

Questions from the Community

What is your experience regarding pricing and costs for Kali Linux?
It is open source. We do not need to pay anything. Most of the tools are open source, so we do not need to pay for licensing. There is minimum cost we have to pay, and based on our expertise, we ca...
What needs improvement with Kali Linux?
Kali Linux is an operating system plus tool, and it is a Linux-based product, so if we need to do anything for Windows, we do not have an option to use the same type of tool. If Kali could provide ...
What is your primary use case for Kali Linux?
I use Kali Linux for vulnerability testing, sandbox analysis, red team penetration testing, and checking vulnerabilities in the network, checking vulnerabilities with users, and red teaming proacti...
What needs improvement with Windows Server?
One area where Windows Server could be improved is in simplifying administration and troubleshooting. While Windows Server is powerful, diagnosing issues related to group policy, DNS, replication, ...
What is your primary use case for Windows Server?
Windows Server serves the primary use case of Active Directory administrator, user and groups management, file and print service, management service, maintenance, and IT infrastructure support.
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: June 2026.
900,644 professionals have used our research since 2012.