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Kali Linux Reviews

Vendor: Kali Linux
4.3 out of 5
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What is Kali Linux?

Kali Linux is widely used by organizations for penetration testing, vulnerability assessments, web application security, network audits, ethical hacking, and open-source intelligence, providing extensive free features.

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Kali Linux is the #11 ranked solution in top Operating Systems for Business. PeerSpot users give Kali Linux an average rating of 8.6 out of 10. Kali Linux is most commonly compared to Ubuntu Linux: Kali Linux vs Ubuntu Linux. Kali Linux is popular among the large enterprise segment, accounting for 48% of users researching this solution on PeerSpot. The top industry researching this solution are professionals from a university, accounting for 13% of all views.
Buyer's Guide
Kali Linux
September 2025
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Kali Linux mindshare

As of October 2025, the mindshare of Kali Linux in the Operating Systems (OS) for Business category stands at 3.0%, up from 0.8% compared to the previous year, according to calculations based on PeerSpot user engagement data.
Operating Systems (OS) for Business Market Share Distribution
ProductMarket Share (%)
Kali Linux3.0%
Rocky Linux14.3%
Ubuntu Linux11.5%
Other71.2%
Operating Systems (OS) for Business

PeerResearch reports based on Kali Linux reviews

TypeTitleDate
CategoryOperating Systems (OS) for BusinessOct 3, 2025Download
ProductReviews, tips, and advice from real usersOct 3, 2025Download
ComparisonKali Linux vs Red Hat Enterprise Linux (RHEL)Oct 3, 2025Download
ComparisonKali Linux vs Ubuntu LinuxOct 3, 2025Download
ComparisonKali Linux vs Oracle LinuxOct 3, 2025Download
Suggested products
TitleRatingMindshareRecommending
Ubuntu Linux4.311.5%95%149 interviewsAdd to research
Rocky Linux4.314.3%100%10 interviewsAdd to research
 
 
Key learnings from peers

Valuable Features

Kali Linux provides extensive tools including Nmap, SQLMap, and Metasploit, ideal for security tasks. Its scalability, ease of use, and user-friendly interface enhance usability. It offers robust web security, real-time data scanning, high performance, and stability. Known for strong security measures, it resists viruses and facilitates network, penetration, and session testing. Its configurable resources allow for efficient operations, documentation resources are widely accessible, and new features optimize system functionality.
  • "The outcomes from using Kali Linux in our organization are significant; we experienced reduced cybersecurity attacks and improved application security, leading to decreased attack surfaces and quicker testing cycles that enabled faster launches and installations."
  • "Kali Linux has helped me learn faster and understand concepts better; you get a sense of appreciation when completing tasks on your own machine without help or hints from available tools or operating systems, with minimal guidance."
  • "Kali Linux has the capability of real-time data scanning for vulnerability assessment for backend services, and that is actually very far more valuable."

Room for Improvement

Kali Linux users suggest improvements in automation for updates, integration of machine learning and AI, a more user-friendly interface, enhanced security, and faster installation. They also request additional features for the free version and integration of enterprise tools for non-enterprise users. Enhanced GUI and command-line support would benefit newcomers. Customized port scanning and improvements in teaching users about Kali Linux are desired to enhance usability for various skill levels.
  • "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 default, which complicates usage; enhancing user-friendliness through more GUI-based tools and better integration could be beneficial."
  • "Many users utilize Kali Linux through virtual machines. Sometimes Kali Linux has issues detecting hardware such as inbuilt or external Wi-Fi adapters."
  • "The only point that I didn't find on Kali Linux for now is the ability to customize port scanning."

ROI

Users reported a significant improvement in security testing efficiency using Kali Linux. Organizations experienced cost savings due to the extensive range of pre-installed tools, reducing the need for additional software purchases. Kali Linux's advanced features helped teams identify vulnerabilities faster, preventing potential breaches and associated costs. Additionally, users found the platform to be user-friendly, which minimized training expenses and increased overall productivity in cybersecurity operations.

Pricing

Kali Linux is widely recognized as a free, open-source solution requiring no licensing payments. Many organizations appreciate its extensive toolset provided at no cost, making it an ideal option for enterprises seeking robust security software. Although some perceive licensing fees as high compared to other products offering a perpetual license, users generally find the cost manageable when considering its comprehensive features and long-term benefits.
  • "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."
  • "The price is good because Kali Linux already provides a good bundle of tools."

Popular Use Cases

Kali Linux is primarily employed for penetration testing, vulnerability assessment, and ethical hacking. It aids in simulating attacks on systems, analyzing web applications, assessing network security, and conducting open-source intelligence. Users utilize its tools for automated website malware scans, Android app testing, and network audits. Often run in virtualized environments alongside operating systems like Windows, it is popular in industries such as IT, banking, and security, due to its lower maintenance requirements and diverse capabilities.

Service and Support

Kali Linux benefits from robust community engagement and well-structured documentation, facilitating easy access to support. Users experience efficient problem-solving through forums and online resources. While direct customer support via email is available, some find the response times slow, prompting independent troubleshooting. Despite being open-source, many find no issues with the support quality due to readily accessible information.

Deployment

Kali Linux's initial setup is generally straightforward, with many users finding it easy and quick, often taking minutes. Basic Linux understanding is recommended, as customization may require programming skills. VirtualBox is a common deployment choice, though challenges can arise that extend the process. Simple steps like providing personal details are involved, but GUI improvements could benefit novice users. Deployments vary between cloud and on-premises, with error resolution occasionally extending setup time.

Scalability

Kali Linux is recognized for its scalability, accommodating various user needs from personal to larger teams. Many users highlight its ability to support multiple instances and professional licenses, making it suitable for complex environments. Ratings on scalability are generally high, often ranging from seven to nine, indicating strong performance in different settings. Resources play a crucial role in how well Kali Linux can be expanded, ensuring flexibility in user capacity management.

Stability

Kali Linux is highly stable, with many giving it ratings between eight and ten for stability. Users find it reliable, particularly when employed for virtualization. Occasional issues such as lagging may occur depending on the system used, but adjustments can improve performance. With years of successful use and project completion, it continues to be trusted for providing efficient vulnerability assessments.
These insights are based on the in-depth reviews provided by peers to help you make a better buying decision.
Download our Kali Linux Buyer's Guide for additional reliable information.

Review data by company size

By reviewers
Company SizeCount
Small Business9
Midsize Enterprise1
Large Enterprise6
By reviewers
By visitors reading reviews
Company SizeCount
Small Business96
Midsize Enterprise51
Large Enterprise137
By visitors reading reviews

Top industries

By visitors reading reviews
Comms Service Provider
13%
University
13%
Computer Software Company
12%
Educational Organization
11%
Government
6%
Retailer
5%
Financial Services Firm
5%
Outsourcing Company
4%
Media Company
4%
Healthcare Company
3%
Hospitality Company
3%
Manufacturing Company
3%
Energy/Utilities Company
3%
Insurance Company
3%
Legal Firm
2%
Transportation Company
2%
Construction Company
1%
Consumer Goods Company
1%
Recreational Facilities/Services Company
1%
Logistics Company
1%
Wholesaler/Distributor
1%

Compare Kali Linux with alternative products

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Learn more about Kali Linux

Organizations run Kali Linux in virtualized environments alongside other operating systems, employing tools for automated scans, malware identification, infrastructure testing, and application development or hosting. These users benefit from lower maintenance requirements and a smaller footprint. The toolset includes Nmap, SQLMap, Metasploit, and Hydra, ensuring effective security assessments. Its high scalability, performance, user-friendly interface, and extensive documentation enhance the platform's usability. Known for stability, flexibility, and virus resistance, Kali Linux supports web security, troubleshooting, and configuration tasks comprehensively.

What are the most important features of Kali Linux?

  • Nmap: A network scanning tool for discovering hosts and services.
  • SQLMap: An SQL injection and database takeover tool.
  • Metasploit: A penetration testing platform with various exploit tools.
  • Hydra: A network log-in cracker supporting numerous protocols.
  • Documentation: Offers extensive resources for user guidance.
  • Stability: Provides a reliable and consistent operating environment.
  • Scalability: Adapts efficiently to growing security needs.
  • Performance: Ensures fast and efficient operations.
  • Virus Resistance: Enhances security through robust virus protection.

What benefits and ROI should users look for in reviews?

  • Cost Efficiency: Free tools reduce operational expenses.
  • Operational Efficiency: Lower maintenance needs and quick setup.
  • Enhanced Security: Robust tools for comprehensive security measures.
  • Flexibility: Adaptable to different environments and requirements.

Kali Linux can support industries in improving security through stable and flexible environments that resist viruses and provide extensive documentation. Users employ it for web security, troubleshooting, and configuring capabilities. Necessary improvements include automation, user-friendliness, and integrating AI and blockchain. Enhancements in security features, faster installations, and better learning tools are also essential. Machine learning integration and non-enterprise user functionalities can address current limitations.

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Kali Linux Reviews Summary
Author infoRatingReview Summary
Senior Technical Manager at a tech vendor with 10,001+ employees4.0We've used Kali Linux for backend vulnerability assessments, finding its real-time scanning capabilities valuable, though it lacks customizable port scanning. Setup was manageable, performance stable, and we're still exploring its full potential after several months of use.
Associate Consultant at a consultancy with 10,001+ employees4.0I've used Kali Linux for a few years to learn pen testing and Linux fundamentals; it's fast, stable, and security-focused, though it could improve hardware detection, UI customization, and wider hardware compatibility for broader accessibility.
SWE-1 at a tech vendor with 10,001+ employees4.0I use Kali Linux for penetration testing and cybersecurity due to its open-source flexibility, robust pre-installed tools, and scalability, though it could improve user-friendliness and support; overall, it significantly enhances our network security and testing efficiency.
IT Manager at PRATHAM SOFTWARE PRIVATE LIMITED4.0I use Kali Linux primarily for penetration and network testing in various sectors, including IT and banking. While it's highly capable with tools like SQLmap, installation can be problematic, and the interface could be more user-friendly for beginners.
Manager at Accenture company5.0I use Kali Linux for hosting and application development due to its low maintenance and stability. While it's already well-developed, improving security is crucial, especially in cloud environments. Its smaller footprint compared to Windows is advantageous.
Junior Executive - Information Security at sunshine holdings5.0I use Kali Linux in my company for vulnerability assessments and penetration testing. The interface is straightforward, but older versions had UI issues. While the latest version improved, occasional lagging remains a concern. Overall, it's useful for identifying vulnerabilities.
Cyber Security Consultant - APAC at Logon Software4.0I use Kali Linux alongside Nmap for network audits and to find vulnerabilities through controlled attacks. It is ideal for penetration testing on networks, web applications, and Android apps, though it could benefit from improved security features.
Researcher in Cyber Security at Sekolah Tinggi Ilmu Statistik BPS4.5I use Kali Linux for penetration testing projects within a Windows 11 virtual environment. It offers valuable tools like SQLMap and Nmap for security tasks. However, its installation in virtualized environments can be slow, possibly due to download sources.