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OffSec

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4.6
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Kali Linux

242 reviews

Kali Linux is an open-source, Debian-based distribution tailored for advanced penetration testing and security auditing. It offers a comprehensive suite of tools and configurations, enabling users to focus on their security tasks without the need for extensive setup. Kali Linux is accessible across multiple platforms and is freely available to information security professionals and enthusiasts. Key Features and Functionality: - Extensive Toolset: Provides hundreds of pre-installed tools for various information security tasks, including penetration testing, security research, computer forensics, reverse engineering, vulnerability management, and red team testing. - Multi-Platform Support: Compatible with various platforms, ensuring flexibility and adaptability for different user needs. - Cloud Integration: Available as an Amazon Machine Image on AWS Marketplace, allowing users to deploy Kali Linux instances in the cloud efficiently. Primary Value and User Solutions: Kali Linux addresses the critical need for a robust and comprehensive security testing environment. By offering a vast array of tools and configurations out of the box, it enables security professionals to conduct thorough assessments, identify vulnerabilities, and strengthen defenses without the overhead of manual tool integration. Its availability on platforms like AWS further enhances its utility by providing scalable and on-demand access to a powerful security testing environment.

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OffSec

15 reviews

The Penetration Testing with Kali Linux (PWK/PEN-200) online ethical hacking course is self-paced. It introduces penetration testing tools and techniques via hands-on experience. PEN-200 trains not only the skills, but also the mindset required to be a successful penetration tester. Students who complete the course and pass the exam earn the Offensive Security Certified Professional (OSCP) certification. This course features five recently retired OSCP exam machines now added to the PWK labs. These five machines represent an entire OSCP exam room.

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Offensive Security Testing Services

1 review

Secure your career in information security. Level up in penetration testing, web application security, or network security with the team behind Kali Linux and the OSCP certification: Offensive Security.

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OffSec Reviews

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Dinesh D.
DD
Dinesh D.
SDE @ NorthLadder
06/04/2026
Validated Reviewer
Verified Current User
Review source: G2 invite
Incentivized Review

Feature-Rich OS for Cybersecurity Work

What I like most is that it includes almost everything I need for security testing in one place. It’s flexible and easy to customize, and it saves me a lot of time because I don’t have to install and configure each tool individually.
Arjun K.
AK
Arjun K.
3rd year student of computer science and engineering at JIIT Noida. Specializes in Blockchain, smart contracts, web3 and AI automations and Agents
05/26/2026
Validated Reviewer
Verified Current User
Review source: Organic

Kali Linux Makes Security Testing Much Easier, But It Has a Learning Curve

I like that Kali Linux comes with almost every security and penetration testing tool already set up, so I don’t have to spend hours installing things manually. The interface feels lightweight and fast even on older systems, and the documentation/community support online is huge. It’s also really flexible since I can run it on a VM, USB, or even through WSL on Windows depending on what I’m working on.
Prakhar J.
PJ
Prakhar J.
Network Security Engineer | THM Top 4% | Cyber Security | CCNA
05/23/2026
Validated Reviewer
Verified Current User
Review source: G2 invite
Incentivized Review

Kali Linux: Lightweight, Ready-to-Use Pentesting Toolkit That Saves Hours

As a security engineer working in the cybersecurity field for almost the past four years, I’ve gained hands-on experience with pentesting, vulnerability assessments, and security auditing, and Kali Linux has been handy for all of these tasks. What I personally like about it is that it largely eliminates the dependency issues we often face on other security operating systems by providing a massive, precompiled arsenal of specialized security tools—like Wireshark, Nmap, and Burp Suite—ready to use right out of the box. That alone is an incredible time-saver. I also want to highlight a few key reasons Kali Linux stands out from other operating systems for me as a security engineer. First, it’s a lightweight distro. I regularly spin it up as a live boot from a USB or run it inside a heavily constrained VM, and it barely sips system resources. The kernel optimizations for packet injection and wireless auditing work smoothly without tedious manual tweaking. Second, switching to Xfce as the default desktop environment was a game changer for my workflow. It’s clean, customizable, and stays out of your way while you’re working. It gives you a functional, no-nonsense workspace that lets you focus entirely on your terminal and your targets. Third, you really can’t beat the price point of a product that’s open source and entirely free. In terms of ROI, it saves our team dozens of hours that would otherwise be spent manually sourcing, compiling, and configuring security tools on a standard Linux distro. It turns an ordinary laptop into a fully equipped testing lab almost instantly. Finally, I appreciate that Kali doesn’t force invasive, bloated AI features into the desktop environment, which is a huge plus for data privacy.

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What is OffSec?

Empowering the world to fight cyber threats with indispensable cybersecurity skills and resources. Build the path to a secure future with OffSec.

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Year Founded
2006
Website
www.offsec.com