PickSmartly Review

Best Linux Operating System in 2026

9.9 PM Score
Products Evaluated
3
Reviews Analyzed
304
Brands Ranked
3
We independently evaluate all recommended products and services. If you click on links we provide, we may receive compensation.

Selecting a Linux operating system for administration is fundamentally different from choosing a desktop environment for casual browsing. In an administrative context, the OS is the backbone of your infrastructure, acting as the engine for web servers, database management, security gateways, and cloud orchestration. You aren't just looking for a pretty interface. You are looking for stability, predictable update cycles, long-term support (LTS), and a robust ecosystem of packages. Whether you are managing a single headless server or a sprawling cluster of virtual machines, your choice of distribution will dictate your workflow, your security posture, and your total cost of ownership.

MacOS Ventura Seniors Guide: A Step-by-Step Manual for the Non-Tech-Savvy to Master to the Most Updated Apple's Desktop Operating System (Tech guides...

Hweryho MacOS Ventura Guide for Seniors

4.9 (705 ratings)
HWERYHO 8.50 X 0.18 X 11.00 Inches

Reviews for HWERYHO (PM Score)

9.9 PM Score
Buy on Amazon
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68 Yes Yes Yes

You sit staring at a sudden software update screen, feeling that familiar surge of anxiety because you aren't quite sure which button won't accidentally delete your precious family photos. This Hweryho manual acts as a calm, patient companion for that exact moment of technological uncertainty. Instead of drowning in complex jargon that most tech manuals favor, this guide breaks down the MacOS Ventura interface into manageable, bite-sized instructions designed specifically for non-tech-savvy users. It transforms the desktop operating system from a confusing maze of icons into a predictable tool you can actually control. Whether you are trying to navigate a new menu or simply want to feel more confident during your daily browsing, this step-by-step manual bridges the gap between frustration and digital fluency.

What We Like
Step-by-step instructions
Senior-friendly language
MacOS Ventura focus
Non-tech-savvy guidance

UNIX and Linux System Administration Handbook

Addison-Wesley UNIX and Linux System Administration Handbook

4.8 (631 ratings)
ADDISON-WESLEY PROFESSIONAL 44936764 1.90 X 6.90 X 9.00 Inches 3.27 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68 Yes Yes Yes

Aspiring sysadmins and seasoned DevOps engineers require this definitive guide to master the complexities of modern server environments. This Addison-Wesley Professional publication serves as a foundational pillar for anyone serious about navigating the intricate architecture of Unix and Linux systems. While many online tutorials offer quick fixes for specific commands, this handbook provides the deep, structural understanding necessary to manage large-scale infrastructures with confidence. It is the kind of resource you keep on your desk for years, pulling it down whenever a complex configuration issue or a critical system error demands a professional, methodical approach. Investing in this text is essentially investing in your own technical reliability.

What We Like
System administration guide
Professional technical resource
Linux architecture depth
Unix management expertise

Linux System Programming: Talking Directly to the Kernel and C Library

O'Reilly Linux System Programming Guide

4.6 (104 ratings)
O'REILLY MEDIA BLACK & WHITE ILLUSTRATIONS 7.00 X 1.10 X 9.19 Inches 1.60 Pounds

Reviews for O'REILLY MEDIA (PM Score)

9.6 PM Score
Buy on Amazon
  • Used Book in Good Condition
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68 Yes Yes Yes

Bridging the gap between high-level code and low-level kernel execution is the primary hurdle for any serious systems engineer. This O'Reilly Media guide tackles that complexity head-on by teaching you how to communicate directly with the Linux kernel and the C library. I found that having a physical copy is a massive advantage when you are deep in a debugging session and need to reference complex syscalls without constantly switching windows. This specific copy is a used book in good condition, making it a sensible way to grab a technical heavyweight without paying full retail for a brand-new edition. It is a foundational resource for anyone looking to master the inner workings of the Linux operating system.

What We Like
Kernel interaction focus
C library mastery
Systems programming depth
Good used condition

Linux Administration: The Linux Operating System and Command Line Guide for Linux Administrators

Linux Administration and Command Line Guide

4.6 (863 ratings)

Reviews for (PM Score)

9.6 PM Score
Buy on Amazon
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com Services LLC 0.00 No No No

You might wonder if a digital guide at such a low price point can actually deliver real substance, but this ebook challenges that doubt immediately. Linux Administration serves as a focused roadmap for anyone looking to master the command line without drowning in unnecessary fluff. Instead of acting as a massive, intimidating encyclopedia, it functions as a practical companion for administrators who need to grasp core operating system concepts quickly. I found the structure helpful for navigating the complexities of the terminal, making it a solid choice for building a technical foundation. It is an incredibly accessible entry point for those wanting to professionalize their Linux skills without a heavy upfront investment.

What We Like
Command line focus
Administrator guide
Digital ebook format
Core OS concepts

Linux for Beginners: A Practical and Comprehensive Guide to Learn Linux Operating System and Master Linux Command Line. Contains Self-Evaluation Tests...

Linux for Beginners Practical Command Line Guide

INDEPENDENTLY PUBLISHED 6.00 X 0.45 X 9.00 Inches 0.59 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68 Yes Yes Yes

The steep learning curve of the terminal often intimidates newcomers, but this guide aims to bridge that gap by turning complex commands into manageable steps. Linux for Beginners serves as a roadmap for anyone feeling lost in the world of open-source operating systems. It focuses heavily on practical application rather than just abstract theory, ensuring you actually learn how to navigate the system effectively. I particularly liked the inclusion of self-evaluation tests, which act as a built-in progress tracker to confirm you have actually mastered a concept before moving on. It is a straightforward, no-nonsense resource for building foundational technical skills without the typical academic fluff.

What We Like
Practical command line mastery
Self-evaluation tests
Comprehensive learning guide
Beginner friendly approach
#8

Linux: Easy Linux For Beginners, Your Step-By-Step Guide To Learning The Linux Operating System And Command Line (Linux Series Book 1)

Reviews for (PM Score)

8.9 PM Score
Buy on Amazon
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com Services LLC 0.00 No No No

Universal 6-In-1 Linux Best Operating Systems Collection Install Recovery Multiboot Bootable Live Usb Flash Thumb Drive For Pcs And Macs

TECH STORE ON USBBAP04 2.00 X 0.75 X 0.50 inches

Reviews for TECH STORE ON (PM Score)

7.9 PM Score
Buy on Amazon
  • Bootable - you can boot with this thumb drive | How to boot with USB Thumb Drive: https://www.techstoreon.com/universal-linux-bootable-USB.html
  • 6 Best Linux operating systems in 64bit (2 come in 32bit in case you need to run it on older CPU computer) with lifetime free updates
  • Does not require internet connection for running and installation | Install or run your favorite Linux directly from USB flash drive alongside other operating systems
  • Great for Mining Cryptocurrency Software
  • Great for IT professionals and for regular users ready to computer
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Tech Store On 6.01 Yes Yes Yes

Mastering Linux Device Driver Development: Write custom device drivers to support computer peripherals in Linux operating systems

Mastering Linux Device Driver Development Guide

7.50 X 1.46 X 9.25 Inches 2.42 Pounds

Reviews for (PM Score)

6.0 PM Score
Buy on Amazon
  • Mastering Linux Device Driver Development: Write custom device drivers to support computer peripherals in Linux operating systems
  • ABIS BOOK
  • Packt Publishing
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68 Yes Yes Yes

Low-level systems engineers and kernel enthusiasts demand this specific manual to bridge the gap between hardware theory and functional code. Mastering Linux Device Driver Development serves as a technical roadmap for anyone tasked with making custom peripherals communicate with the Linux kernel. Rather than sticking to surface-level programming, this Packt Publishing guide dives deep into the architecture required to support complex computer hardware. It is an essential desk reference for developers who need to move beyond standard software and start writing the foundational code that manages system resources. If you are serious about mastering the intricacies of driver creation, this ABIS BOOK provides the structured approach necessary to navigate the Linux ecosystem successfully.

What We Like
Custom driver development
Peripheral support training
Linux kernel architecture
Systems engineering guide

Linux System Programming Techniques: Become a proficient Linux system programmer using expert recipes and techniques

Linux System Programming Techniques Expert Guide

7.50 X 0.98 X 9.25 Inches 1.63 Pounds

Reviews for (PM Score)

5.6 PM Score
Buy on Amazon
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68 Yes Yes Yes

Linux System Programming Techniques stands as a definitive roadmap for engineers aiming to master low-level kernel interactions and system-level development. This isn't just a dry theoretical text. It functions more like a practical toolkit filled with expert recipes designed to bridge the gap between basic coding and true systems proficiency. I found the focus on actionable techniques particularly helpful for anyone navigating the complexities of the Linux environment. Instead of getting lost in endless abstractions, you get straight to the core mechanics that drive modern operating systems. But for a professional developer looking to level up their technical depth, the specialized knowledge contained within is indispensable.

What We Like
Expert programming recipes
System-level techniques
Proficiency building guide
Linux development focus
#13

Mega Linux Collection - 15 Linux Operating Systems on USB: Mint XFCE, LXLE, Lubuntu, Bodhi, Antix, Q4OS, TinyCore, Chaletos, Peppermint, 4M, Debiandog...

Linux Artists Mega Collection 15 Operating Systems USB

LINUX ARTISTS LINCOLLECTUSB1MEGA 0.79 X 5.12 X 8.66 Inches

Reviews for LINUX ARTISTS (PM Score)

5.2 PM Score
Buy on Amazon
  • You are getting 15 different types of Linux operating System provided on a 16 gb USB memory stick.
  • The Linux that you will be getting are:Mint XFCE, LXLE, Lubuntu, Bodhi, Antix, Q4OS, TinyCore, Chaletos, Peppermint, 4M, Debiandog, Slitaz, Slacko, Trisquel & Refracta.
  • All of the Linux’s are of 32Bit processor, and have been fully tested by me. They can be started in Live mode straight from the USB
  • The OS will come with many build-in software, such as: LibreOffice, VLC media player, Firefox Web Browser, Chess, Thunderbird mail and more.
  • You will get full access to all your computer files, always a good backup in case your system doesn't start.
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
No No No

Old hardware deserves a second life rather than a trip to the landfill. This Mega Linux Collection from Linux Artists is an absolute lifesaver for anyone stuck with aging 32-bit machines that struggle to run modern software. By packing fifteen distinct distributions like Mint XFCE, Lubuntu, and Bodhi onto a single 16GB USB stick, this toolkit allows you to boot directly into Live mode to test environments without touching your hard drive. It is a massive relief to have a reliable backup tool that provides full access to your files when a primary system fails. Plus, having pre-installed essentials like LibreOffice, VLC, and Firefox means you can get straight to work the moment you boot up. It is practical, diverse, and incredibly efficient for reviving legacy tech.

What We Like
Fifteen Linux distributions
32-bit processor compatible
Live boot mode
Pre-installed essential software
16GB USB capacity
#14

Ubuntu Linux 12.04 - Easy To Use Operating System - Virtually Virus-Proof!

LINUXFREAK UNKNOWN 0.14 Pounds

Reviews for LINUXFREAK (PM Score)

4.8 PM Score
Buy on Amazon
  • The latest 32-bit release of one of the most powerful versions of Linux
  • Pre-loaded with tons of powerful applications, including an office suite.
  • Disc has been professionally produced, and is fully bootable
  • Free updates, including security and application updates. Free Application library available to extend the operating system features
  • Almost completely immune to viruses and malware
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
SirTanon 5.96 No No No

Linux with Operating System Concepts

Linux with Operating System Concepts Textbook

7.00 X 1.25 X 10.00 Inches 2.37 Pounds

Reviews for (PM Score)

0.0 PM Score
Buy on Amazon
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
PAMS Ent 8.41 No No No

You are staring at a terminal window, trying to debug a kernel panic or understand why a specific process is hanging, and suddenly the theoretical concepts click into place. This book bridges the gap between abstract computing theory and the practical reality of the Linux environment. Instead of just memorizing commands, you are forced to grapple with the actual architecture that makes the OS tick. It serves as a serious investment for students or sysadmins who need to move beyond being mere users and become true masters of the system. It is a dense, focused resource that turns the mystery of operating systems into a structured, manageable learning path.

What We Like
Core OS concepts
Linux practical application
Technical depth
In stock

UNIX and Linux System Administration Handbook, 4th Edition

UNIX and Linux System Administration Handbook Fourth Edition

4.7 (272 ratings)
PRENTICE HALL 7.25 X 1.75 X 9.25 Inches 3.62 Pounds

Reviews for PRENTICE HALL (PM Score)

9.7 PM Score
Buy on Amazon
  • New
  • Mint Condition
  • Dispatch same day for order received before 12 noon
  • Guaranteed packaging
  • No quibbles returns
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Peoples’ Books 5.67 Yes Yes Yes

System administrators looking to master complex server environments need this Prentice Hall manual as their primary technical cornerstone. This fourth edition serves as a deep-dive resource that bridges the gap between basic command usage and high-level infrastructure management. Because the copy arrives in mint condition, you can rely on it being a pristine addition to your professional library. The shipping process is impressively efficient, offering same-day dispatch for orders placed before noon, which is vital when you are racing against a learning curve or a certification deadline. Even the packaging is guaranteed to keep the spine and pages in perfect shape during transit. It is a reliable, high-quality investment for anyone serious about the nuances of Unix and Linux systems.

What We Like
Mint condition
Same day dispatch
Guaranteed packaging
No quibbles returns
Professional technical resource

BSD Hacks

O'Reilly Media BSD Hacks Technical Book

O'REILLY MEDIA 0596006799_USED 6.00 X 1.01 X 9.00 Inches 1.32 Pounds

Reviews for O'REILLY MEDIA (PM Score)

5.8 PM Score
Buy on Amazon
  • Used Book in Good Condition
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Revolver Market 9.63 No No No

BSD Hacks serves as a definitive deep dive for anyone looking to master Unix-like systems. This O'Reilly Media publication remains a cornerstone for systems programmers, offering insights that are still relevant for understanding kernel architecture and system administration. Since this is a used copy in good condition, it provides an incredibly cost-effective way to add a piece of computing history to your technical library. It feels like finding a hidden gem in a used bookstore, especially considering the depth of knowledge contained within its pages. Whether you are a student or a seasoned engineer, having this resource on hand for reference is a smart move for your professional toolkit.

What We Like
Good used condition
Technical systems guide
O'Reilly Media publication
In stock

Linux Dns Server Administration (Craig Hunt Linux Library)

Sybex Linux DNS Server Administration Guide

BRAND: SYBEX INC 7.50 X 1.00 X 9.00 Inches 1.63 Pounds

Reviews for BRAND: SYBEX INC (PM Score)

4.9 PM Score
Buy on Amazon
  • Linux
  • Linux DNS
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
ThriftBooks-Baltimore 9.89 No No No

You are staring at a broken network resolution issue at 2:00 AM, and your standard troubleshooting steps have completely failed. This is exactly where the specialized knowledge in Linux DNS Server Administration becomes an absolute lifesaver for any sysadmin. Sybex Inc has put together a targeted resource that cuts through the fluff to focus on the intricate mechanics of DNS within a Linux environment. It functions less like a dry textbook and more like a technical manual you keep on your desk for real-world deployment scenarios. Whether you are configuring new zones or hardening existing services, the depth provided here makes complex network tasks feel manageable rather than overwhelming.

What We Like
Linux DNS focus
Technical administration guide
Sybex Inc publication
Core networking concepts
Buying Guide

A Guide to Selecting the Best Linux Operating System for Administration

A Guide to Selecting the Best Linux Operating System for Administration

Defining the Use Case: Server vs. Workstation

The first decision in Linux administration is determining whether you need a server-grade distribution or a workstation-grade environment. Server distributions are typically optimized for uptime and minimal overhead. They often ship without a Graphical User Interface (GUI) to reduce the attack surface and conserve system resources. If your goal is to host services, look for distributions that prioritize 'headless' stability. Conversely, if you are a systems administrator who needs to perform heavy local development, debugging, or network monitoring, you may require a workstation distribution that offers better hardware compatibility and a more user-friendly desktop environment alongside powerful command-line tools.

Stability vs. Bleeding Edge

One of the most critical trade-offs in the Linux world is the release cycle. Administrative environments generally fall into two camps: Stable/LTS and Rolling Release.

Stable/LTS (Long Term Support): These distributions prioritize reliability above all else. Once a version is released, the software versions remain largely static, receiving only security patches and critical bug fixes. This is the gold standard for production environments where you cannot afford a kernel update to break a proprietary driver or a specific database configuration.

Rolling Release: These distributions provide the latest versions of software almost as soon as they are released. While this is excellent for testing the newest features of tools like Docker or Kubernetes, it introduces a level of volatility that can be dangerous in a production setting. For administration, stick to LTS for your core infrastructure and reserve rolling releases for experimental sandboxes.

Package Management and Ecosystem Support

The efficiency of an administrator is often tied to how quickly they can deploy and manage software. This is governed by the package manager (e.g., APT, YUM/DNF, Pacman). When choosing an OS, consider the availability of pre-compiled binaries for the tools you rely on. A distribution with a massive repository and strong community backing ensures that when a new security vulnerability is discovered, a patch is available within hours. Furthermore, consider the 'enterprise readiness' of the ecosystem. Does the distribution integrate seamlessly with configuration management tools like Ansible, Chef, or Puppet? Does it have native support for containerization runtimes? The more integrated the OS is with modern DevOps workflows, the more valuable it becomes to your administration toolkit.

Security and Compliance Requirements

For administrators in regulated industries—such as finance, healthcare, or government—security is not an afterthought. It is the primary requirement. Look for distributions that offer robust Mandatory Access Control (MAC) systems, such as SELinux or AppArmor, out of the box. Additionally, evaluate the frequency and transparency of security audits and the longevity of the support lifecycle. A distribution that promises five to ten years of security updates is infinitely more valuable for enterprise administration than one that requires a complete OS reinstallation every twelve months to stay compliant.

Recommendation Logic

When making your final selection, follow this logic: If you are building a production-critical web or database server, prioritize an LTS distribution with a proven track record of stability. If you are managing a fleet of diverse hardware, prioritize a distribution with extensive driver support and a wide variety of kernel configurations. If you are a developer-centric administrator, look for a balance of stability and modern package availability. Always test your chosen distribution in a virtualized environment before deploying it to your physical or cloud infrastructure.

Ready to choose?

Jump back to our ranked picks or compare the shortlist side by side.

Frequently Asked Questions

Quick answers about Linux Operating System before you buy.

The best administrative distributions prioritize stability, security, and package management over flashy user interfaces. They typically offer long-term support cycles and robust command-line tools for server management.

Debian-based systems (like Ubuntu) are known for their massive software repositories and ease of use, while Red Hat-based systems (like AlmaLinux) are the industry standard for enterprise-grade stability and strict security compliance.

Most professional administration is performed via the Command Line Interface (CLI) to save system resources and allow for remote management via SSH. A GUI is generally only necessary for initial setup or specific desktop-based workflows.

Stable distributions release major updates every few years, ensuring high reliability for servers. Rolling releases provide the latest software versions immediately but may introduce instability, making them less ideal for mission-critical administration.

Extremely important. A large community means faster security patches, more extensive documentation, and easier troubleshooting when encountering complex configuration issues.

While you can, it is often better to use a user-friendly distribution for your desktop and a stripped-down, hardened version for your server to minimize the attack surface and resource overhead.

LTS indicates that the developers commit to providing security updates and bug fixes for a set period (often 5 to 10 years). This is critical for administrators who want to avoid frequent, disruptive OS upgrades.
Research & Insights

Our Analysis of Linux Operating System

304 Reviews Analyzed
3 Products Evaluated
6.8 Avg PM Score
3 Brands Ranked

Top 10 Linux Operating System Brands on Amazon

Share of top-ranked products by brand, from our editorial analysis.

  1. 01 Brand: Sybex Inc 1 (33.3%)
  2. 02 O'reilly Media 1 (33.3%)
  3. 03 Prentice Hall 1 (33.3%)

What Our Analysis Found

We've carried out a comprehensive analysis of 304 reviews on Linux Operating System, using our selection criteria to identify the best options in the computers & technology. Our findings reveal that most customers typically select Linux Operating System priced around $25.74, with top brands including hweryho, createspace independent publishing platform, addison-wesley professional, independently published, tech store on, o'reilly media, cengage learning and arm education media and linuxfreak.

Our team of expert editors reviewed these high-quality items and handpicked the top 21 Linux Operating System for your consideration. We've also done extensive research on numerous sellers, identifying the best ones in the computers & technology category — including amazon.com, amazon.com services llc, tech store on and classicbook and sirtanon.

We are dedicated to assisting our users in finding the right administration Products based on their needs, saving them considerable time when choosing which Linux Operating System to buy. We take pride in the number of satisfied users we've helped through our thorough and insightful reviews.

Side by Side

Comparison Table

Compare the top 21 picks at a glance — select a column to sort.

# Product Brand PM Score Rating Where to Buy
1 Hweryho MacOS Ventura Guide for Seniors Hweryho 9.9 4.9 (705) Buy on Amazon
2 Addison-Wesley UNIX and Linux System Administration Handbook Addison-Wesley Professional 9.8 4.8 (631) Buy on Amazon
3 Linux for Beginners: An Introduction to the Linux Operating Createspace Independent Publishing Platform 9.7 4.5 (1,304) Buy on Amazon
4 O'Reilly Linux System Programming Guide O'Reilly Media 9.6 4.6 (104) Buy on Amazon
5 Linux Administration and Command Line Guide 9.6 4.6 (863) Buy on Amazon
6 Linux for Beginners Practical Command Line Guide Independently Published 9.3 4.3 (364) Buy on Amazon
7 Guide to Parallel Operating Systems with Windows 10 and Linu Cengage Learning 9.3 4.3 (99) Buy on Amazon
8 LINUX: Easy Linux For Beginners, Your Step-By-Step Guide To 8.9 3.9 (260) Buy on Amazon
9 Universal 6-in-1 Linux Best Operating Systems Collection Ins Tech Store On 7.9 3.4 (90) Buy on Amazon
10 Mastering Linux Device Driver Development Guide 6.0 4.7 (26) Buy on Amazon
11 Operating Systems Foundations with Linux on the Raspberry Pi ARM Education Media 5.7 4.4 (25) Buy on Amazon
12 Linux System Programming Techniques Expert Guide 5.6 4.5 (21) Buy on Amazon
13 Linux Artists Mega Collection 15 Operating Systems USB Linux Artists 5.2 5.0 (3) Buy on Amazon
14 Ubuntu Linux 12.04 - Easy to Use Operating System - Virtuall Linuxfreak 4.8 3.5 (26) Buy on Amazon
15 Linux: The Textbook, Second Edition Chapman and Hall/CRC 4.8 4.5 (5) Buy on Amazon
16 Linux with Operating System Concepts Textbook 0.0 0.0 Buy on Amazon
17 iPad Seniors Guide: A Step-by-Step Manual for Non-Tech-Savvy 0.0 0.0 Buy on Amazon
18 MacBook Seniors Guide: A Step-by-Step Manual for the Non-Tec UrGod 0.0 0.0 Buy on Amazon
19 UNIX and Linux System Administration Handbook Fourth Edition Prentice Hall 9.7 4.7 (272) Buy on Amazon
20 O'Reilly Media BSD Hacks Technical Book O'Reilly Media 5.8 4.6 (23) Buy on Amazon
21 Sybex Linux DNS Server Administration Guide Brand: Sybex Inc 4.9 4.4 (9) Buy on Amazon