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Top Free Operating Systems

Check out our list of free Operating Systems. Products featured on this list are the ones that offer a free trial version. As with most free versions, there are limitations, typically time or features.

If you'd like to see more products and to evaluate additional feature options, compare all Operating Systems to ensure you get the right product.

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G2 takes pride in showing unbiased reviews on user satisfaction in our ratings and reports. We do not allow paid placements in any of our ratings, rankings, or reports. Learn about our scoring methodologies.
9 Operating System Products Available
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Ubuntu
By Canonical Ltd.
(2,060)4.5 out of 5
7th Easiest To Use in Operating System software
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  • Overview
    Expand/Collapse Overview
    • Product Description
    How are these determined?Information
    This description is provided by the seller.

    Super-fast, easy to use and free, the Ubuntu operating system (OS) powers millions of machines worldwide.: * Ubuntu server is the most popular OS for VMs and containers in the public cloud. * Ubuntu

    Users
    • Software Engineer
    • Senior Software Engineer
    Industries
    • Information Technology and Services
    • Computer Software
    Market Segment
    • 47% Small-Business
    • 33% Mid-Market
    User Sentiment
    How are these determined?Information
    These insights, currently in beta, are compiled from user reviews and grouped to display a high-level overview of the software.
    • Ubuntu is a Linux distribution that offers a range of services, including a secure and customizable operating system, a developer environment, and server hosting capabilities.
    • Reviewers like Ubuntu's user-friendliness, security features, and extensive software library, as well as its strong community support and the ease of installation and configuration.
    • Reviewers mentioned that Ubuntu can be slow in bringing updates, has high CPU core process utilization at startup, and can be complex to use for non-technical users.
  • User Satisfaction
    Expand/Collapse User Satisfaction
    • Ubuntu features and usability ratings that predict user satisfaction
    8.7
    Has the product been a good partner in doing business?
    Average: 8.5
    8.6
    Ease of Use
    Average: 8.4
    8.3
    Quality of Support
    Average: 8.1
    8.7
    Ease of Admin
    Average: 8.5
  • Seller Details
    Expand/Collapse Seller Details
    • Seller Details
    Seller
    Canonical Ltd.
    Year Founded
    2004
    HQ Location
    London
    Twitter
    @Canonical
    104,400 Twitter followers
    LinkedIn® Page
    www.linkedin.com
    1,627 employees on LinkedIn®
Product Description
How are these determined?Information
This description is provided by the seller.

Super-fast, easy to use and free, the Ubuntu operating system (OS) powers millions of machines worldwide.: * Ubuntu server is the most popular OS for VMs and containers in the public cloud. * Ubuntu

Users
  • Software Engineer
  • Senior Software Engineer
Industries
  • Information Technology and Services
  • Computer Software
Market Segment
  • 47% Small-Business
  • 33% Mid-Market
User Sentiment
How are these determined?Information
These insights, currently in beta, are compiled from user reviews and grouped to display a high-level overview of the software.
  • Ubuntu is a Linux distribution that offers a range of services, including a secure and customizable operating system, a developer environment, and server hosting capabilities.
  • Reviewers like Ubuntu's user-friendliness, security features, and extensive software library, as well as its strong community support and the ease of installation and configuration.
  • Reviewers mentioned that Ubuntu can be slow in bringing updates, has high CPU core process utilization at startup, and can be complex to use for non-technical users.
Ubuntu features and usability ratings that predict user satisfaction
8.7
Has the product been a good partner in doing business?
Average: 8.5
8.6
Ease of Use
Average: 8.4
8.3
Quality of Support
Average: 8.1
8.7
Ease of Admin
Average: 8.5
Seller Details
Seller
Canonical Ltd.
Year Founded
2004
HQ Location
London
Twitter
@Canonical
104,400 Twitter followers
LinkedIn® Page
www.linkedin.com
1,627 employees on LinkedIn®
Learn more
Oracle Linux
By Oracle
(307)4.4 out of 5
View top Consulting Services for Oracle Linux
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Entry Level Price:Free Unlimited
  • Overview
    Expand/Collapse Overview
    • Product Description
    How are these determined?Information
    This description is provided by the seller.

    A highly performant and secure operating environment, Oracle Linux delivers virtualization, management, automation, and cloud native computing tools, along with the operating system, in a single, easy

    Users
    • DevOps Engineer
    • Senior Software Engineer
    Industries
    • Information Technology and Services
    • Computer Software
    Market Segment
    • 50% Enterprise
    • 30% Mid-Market
  • User Satisfaction
    Expand/Collapse User Satisfaction
    • Oracle Linux features and usability ratings that predict user satisfaction
    8.5
    Has the product been a good partner in doing business?
    Average: 8.5
    8.5
    Ease of Use
    Average: 8.4
    8.2
    Quality of Support
    Average: 8.1
    8.5
    Ease of Admin
    Average: 8.5
  • What G2 Users Think
    Expand/Collapse What G2 Users Think
    • Roshan S.
    RS
    Security is one of the maine feature in all Oracle software. Perfomance: utilize with the maximum capabilty in terms of efficiency and... Read review
    VB
    ORacle is free to use and easy to share. Read review
  • Seller Details
    Expand/Collapse Seller Details
    • Seller Details
    Seller
    Oracle
    Year Founded
    1977
    HQ Location
    Austin, TX
    Twitter
    @Oracle
    824,139 Twitter followers
    LinkedIn® Page
    www.linkedin.com
    199,405 employees on LinkedIn®
    Ownership
    NYSE:ORCL
Product Description
How are these determined?Information
This description is provided by the seller.

A highly performant and secure operating environment, Oracle Linux delivers virtualization, management, automation, and cloud native computing tools, along with the operating system, in a single, easy

Users
  • DevOps Engineer
  • Senior Software Engineer
Industries
  • Information Technology and Services
  • Computer Software
Market Segment
  • 50% Enterprise
  • 30% Mid-Market
Oracle Linux features and usability ratings that predict user satisfaction
8.5
Has the product been a good partner in doing business?
Average: 8.5
8.5
Ease of Use
Average: 8.4
8.2
Quality of Support
Average: 8.1
8.5
Ease of Admin
Average: 8.5
Roshan S.
RS
Security is one of the maine feature in all Oracle software. Perfomance: utilize with the maximum capabilty in terms of efficiency and... Read review
VB
ORacle is free to use and easy to share. Read review
Seller Details
Seller
Oracle
Year Founded
1977
HQ Location
Austin, TX
Twitter
@Oracle
824,139 Twitter followers
LinkedIn® Page
www.linkedin.com
199,405 employees on LinkedIn®
Ownership
NYSE:ORCL
Learn more

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CloudReady
By Neverware
(28)4.6 out of 5
Save to My Lists
Entry Level Price:Free for everyone
  • Overview
    Expand/Collapse Overview
    • Product Description
    How are these determined?Information
    This description is provided by the seller.

    CloudReady is the highly secure, fast, and modern operating system that runs on almost any hardware. Launched in February 2015, CloudReady garnered immediate attention by giving budget-strapped school

    Users
    No information available
    Industries
    No information available
    Market Segment
    • 54% Small-Business
    • 32% Mid-Market
  • User Satisfaction
    Expand/Collapse User Satisfaction
    • CloudReady features and usability ratings that predict user satisfaction
    9.0
    Has the product been a good partner in doing business?
    Average: 8.5
    8.9
    Ease of Use
    Average: 8.4
    8.4
    Quality of Support
    Average: 8.1
    9.4
    Ease of Admin
    Average: 8.5
  • What G2 Users Think
    Expand/Collapse What G2 Users Think
    • Dinesh P.
    DP
    1. Free and open source 2. Linux based so its very secure 3. Familiar user interface due to similarity with Chrome os 4. Support for chromium... Read review
    Verified User in Plastics
    UP
    CloudReady is built-in OS Linus, Windows, BSD etc. Both free and Open Source can it on CloudyReady. CouldyReady is used for the Development and... Read review
  • Seller Details
    Expand/Collapse Seller Details
    • Seller Details
    Seller
    Neverware
    Year Founded
    2011
    HQ Location
    New York, New York
    Twitter
    @neverware
    2,962 Twitter followers
    LinkedIn® Page
    www.linkedin.com
    26 employees on LinkedIn®
Product Description
How are these determined?Information
This description is provided by the seller.

CloudReady is the highly secure, fast, and modern operating system that runs on almost any hardware. Launched in February 2015, CloudReady garnered immediate attention by giving budget-strapped school

Users
No information available
Industries
No information available
Market Segment
  • 54% Small-Business
  • 32% Mid-Market
CloudReady features and usability ratings that predict user satisfaction
9.0
Has the product been a good partner in doing business?
Average: 8.5
8.9
Ease of Use
Average: 8.4
8.4
Quality of Support
Average: 8.1
9.4
Ease of Admin
Average: 8.5
Dinesh P.
DP
1. Free and open source 2. Linux based so its very secure 3. Familiar user interface due to similarity with Chrome os 4. Support for chromium... Read review
Verified User in Plastics
UP
CloudReady is built-in OS Linus, Windows, BSD etc. Both free and Open Source can it on CloudyReady. CouldyReady is used for the Development and... Read review
Seller Details
Seller
Neverware
Year Founded
2011
HQ Location
New York, New York
Twitter
@neverware
2,962 Twitter followers
LinkedIn® Page
www.linkedin.com
26 employees on LinkedIn®
Learn more
VyOS
By VyOS Networks
(47)4.6 out of 5
Optimized for quick response
Save to My Lists
Entry Level Price:Free
  • Overview
    Expand/Collapse Overview
    • Product Description
    How are these determined?Information
    This description is provided by the seller.

    Experience the unparalleled functionality of the VyOS Universal Router An open-source network operating system underpinned by the robust Debian GNU/Linux. Crafted with the modern IT landscape in mi

    Users
    No information available
    Industries
    • Computer & Network Security
    • Information Technology and Services
    Market Segment
    • 49% Small-Business
    • 34% Mid-Market
    User Sentiment
    How are these determined?Information
    These insights, currently in beta, are compiled from user reviews and grouped to display a high-level overview of the software.
    • Vyos is a networking solution that runs on various hardware and supports advanced routing protocols, VPN support, and has an API for configuration.
    • Reviewers frequently mention the product's cost-effectiveness, open-source flexibility, comprehensive networking capabilities, and the ease of use of its command-line interface.
    • Users experienced issues with the product's learning curve, lack of a GUI for newer users, and inadequate logging and monitoring functionalities compared to commercial solutions.
  • User Satisfaction
    Expand/Collapse User Satisfaction
    • VyOS features and usability ratings that predict user satisfaction
    9.5
    Has the product been a good partner in doing business?
    Average: 8.5
    8.9
    Ease of Use
    Average: 8.4
    9.1
    Quality of Support
    Average: 8.1
    9.0
    Ease of Admin
    Average: 8.5
  • Seller Details
    Expand/Collapse Seller Details
    • Seller Details
    Seller
    VyOS Networks
    Company Website
    Year Founded
    2014
    HQ Location
    Poway, California, USA
    Twitter
    @vyos_dev
    2,747 Twitter followers
    LinkedIn® Page
    www.linkedin.com
    30 employees on LinkedIn®
Product Description
How are these determined?Information
This description is provided by the seller.

Experience the unparalleled functionality of the VyOS Universal Router An open-source network operating system underpinned by the robust Debian GNU/Linux. Crafted with the modern IT landscape in mi

Users
No information available
Industries
  • Computer & Network Security
  • Information Technology and Services
Market Segment
  • 49% Small-Business
  • 34% Mid-Market
User Sentiment
How are these determined?Information
These insights, currently in beta, are compiled from user reviews and grouped to display a high-level overview of the software.
  • Vyos is a networking solution that runs on various hardware and supports advanced routing protocols, VPN support, and has an API for configuration.
  • Reviewers frequently mention the product's cost-effectiveness, open-source flexibility, comprehensive networking capabilities, and the ease of use of its command-line interface.
  • Users experienced issues with the product's learning curve, lack of a GUI for newer users, and inadequate logging and monitoring functionalities compared to commercial solutions.
VyOS features and usability ratings that predict user satisfaction
9.5
Has the product been a good partner in doing business?
Average: 8.5
8.9
Ease of Use
Average: 8.4
9.1
Quality of Support
Average: 8.1
9.0
Ease of Admin
Average: 8.5
Seller Details
Seller
VyOS Networks
Company Website
Year Founded
2014
HQ Location
Poway, California, USA
Twitter
@vyos_dev
2,747 Twitter followers
LinkedIn® Page
www.linkedin.com
30 employees on LinkedIn®
AlmaLinux OS
By AlmaLinux OS Foundation
(11)4.6 out of 5
Save to My Lists
  • Overview
    Expand/Collapse Overview
    • Product Description
    How are these determined?Information
    This description is provided by the seller.

    AlmaLinux OS is an enterprise Linux operating system used across the globe by enterprises, supercomputers, and hobbyists alike, but it’s guided and built by the community. We were the first downst

    Users
    No information available
    Industries
    No information available
    Market Segment
    • 45% Mid-Market
    • 36% Small-Business
  • User Satisfaction
    Expand/Collapse User Satisfaction
    • AlmaLinux OS features and usability ratings that predict user satisfaction
    10.0
    Has the product been a good partner in doing business?
    Average: 8.5
    9.6
    Ease of Use
    Average: 8.4
    9.0
    Quality of Support
    Average: 8.1
    10.0
    Ease of Admin
    Average: 8.5
  • What G2 Users Think
    Expand/Collapse What G2 Users Think
    • Kanishk B.
    KB
    I personally love the Graphic UI and the environment because of the ease of usability and the ability of the user to control the system, as well as... Read review
    Akshat G.
    AG
    The operating system is decentralised and free. Read review
  • Seller Details
    Expand/Collapse Seller Details
    • Seller Details
    Seller
    AlmaLinux OS Foundation
    Year Founded
    2021
    HQ Location
    Estero, Florida
    Twitter
    @almalinux
    10,117 Twitter followers
    LinkedIn® Page
    www.linkedin.com
    8 employees on LinkedIn®
Product Description
How are these determined?Information
This description is provided by the seller.

AlmaLinux OS is an enterprise Linux operating system used across the globe by enterprises, supercomputers, and hobbyists alike, but it’s guided and built by the community. We were the first downst

Users
No information available
Industries
No information available
Market Segment
  • 45% Mid-Market
  • 36% Small-Business
AlmaLinux OS features and usability ratings that predict user satisfaction
10.0
Has the product been a good partner in doing business?
Average: 8.5
9.6
Ease of Use
Average: 8.4
9.0
Quality of Support
Average: 8.1
10.0
Ease of Admin
Average: 8.5
Kanishk B.
KB
I personally love the Graphic UI and the environment because of the ease of usability and the ability of the user to control the system, as well as... Read review
Akshat G.
AG
The operating system is decentralised and free. Read review
Seller Details
Seller
AlmaLinux OS Foundation
Year Founded
2021
HQ Location
Estero, Florida
Twitter
@almalinux
10,117 Twitter followers
LinkedIn® Page
www.linkedin.com
8 employees on LinkedIn®
Learn more
Android OS by emteria
By emteria
(12)4.6 out of 5
Save to My Lists
Entry Level Price:Free
  • Overview
    Expand/Collapse Overview
    • Product Description
    How are these determined?Information
    This description is provided by the seller.

    emteria is the solution for all your Android™ OS customization and maintenance needs. Designed as a foundation for building modern customer facing products, emteria provides product builders with to

    Users
    No information available
    Industries
    No information available
    Market Segment
    • 42% Small-Business
    • 33% Enterprise
  • User Satisfaction
    Expand/Collapse User Satisfaction
    • Android OS by emteria features and usability ratings that predict user satisfaction
    9.2
    Has the product been a good partner in doing business?
    Average: 8.5
    9.2
    Ease of Use
    Average: 8.4
    9.6
    Quality of Support
    Average: 8.1
    7.9
    Ease of Admin
    Average: 8.5
  • What G2 Users Think
    Expand/Collapse What G2 Users Think
    • Verified User in Aviation & Aerospace
    UA
    The best I like Emteria OS Remote capabilities and visibility for each device through MDM Portal. You can easily see the status of your running... Read review
    Verified User in Hospitality
    IH
    As other reviewers already mentioned it, Emteria has quite a few strong points. If I'm asked to choose just one, that would be Microsoft Azure support Read review
  • Seller Details
    Expand/Collapse Seller Details
    • Seller Details
    Seller
    emteria
    Year Founded
    2017
    HQ Location
    Aachen, NRW
    LinkedIn® Page
    www.linkedin.com
    11 employees on LinkedIn®
Product Description
How are these determined?Information
This description is provided by the seller.

emteria is the solution for all your Android™ OS customization and maintenance needs. Designed as a foundation for building modern customer facing products, emteria provides product builders with to

Users
No information available
Industries
No information available
Market Segment
  • 42% Small-Business
  • 33% Enterprise
Android OS by emteria features and usability ratings that predict user satisfaction
9.2
Has the product been a good partner in doing business?
Average: 8.5
9.2
Ease of Use
Average: 8.4
9.6
Quality of Support
Average: 8.1
7.9
Ease of Admin
Average: 8.5
Verified User in Aviation & Aerospace
UA
The best I like Emteria OS Remote capabilities and visibility for each device through MDM Portal. You can easily see the status of your running... Read review
Verified User in Hospitality
IH
As other reviewers already mentioned it, Emteria has quite a few strong points. If I'm asked to choose just one, that would be Microsoft Azure support Read review
Seller Details
Seller
emteria
Year Founded
2017
HQ Location
Aachen, NRW
LinkedIn® Page
www.linkedin.com
11 employees on LinkedIn®
Learn more
FydeOS
By FydeOS
(3)3.8 out of 5
Save to My Lists
  • Overview
    Expand/Collapse Overview
    • Product Description
    How are these determined?Information
    This description is provided by the seller.

    FydeOS (Fyde pronounced like “fide” /faɪd/ ) is a lightweight operating system that carries a Linux kernel, it is powered by browser platform and container technology. It is very similar to Google Chr

    Users
    No information available
    Industries
    No information available
    Market Segment
    • 100% Small-Business
  • User Satisfaction
    Expand/Collapse User Satisfaction
    • FydeOS features and usability ratings that predict user satisfaction
    5.0
    Has the product been a good partner in doing business?
    Average: 8.5
    8.3
    Ease of Use
    Average: 8.4
    7.5
    Quality of Support
    Average: 8.1
    10.0
    Ease of Admin
    Average: 8.5
  • What G2 Users Think
    Expand/Collapse What G2 Users Think
    • Dhairya G.
    DG
    I appreciate Fyde OS's astounding speed and effectiveness the most. Even on outdated technology, it feels quick and responsive. For those searching... Read review
    Shubham R.
    SR
    Support for Android apps is the best thing about FydeOS. As most of the applications have moved on cloud, and FydeOS being browser first, makes it... Read review
  • Seller Details
    Expand/Collapse Seller Details
    • Seller Details
    Seller
    FydeOS
    Year Founded
    2015
    HQ Location
    Haidian District, Beijing, Beijing
    LinkedIn® Page
    www.linkedin.com
    10 employees on LinkedIn®
Product Description
How are these determined?Information
This description is provided by the seller.

FydeOS (Fyde pronounced like “fide” /faɪd/ ) is a lightweight operating system that carries a Linux kernel, it is powered by browser platform and container technology. It is very similar to Google Chr

Users
No information available
Industries
No information available
Market Segment
  • 100% Small-Business
FydeOS features and usability ratings that predict user satisfaction
5.0
Has the product been a good partner in doing business?
Average: 8.5
8.3
Ease of Use
Average: 8.4
7.5
Quality of Support
Average: 8.1
10.0
Ease of Admin
Average: 8.5
Dhairya G.
DG
I appreciate Fyde OS's astounding speed and effectiveness the most. Even on outdated technology, it feels quick and responsive. For those searching... Read review
Shubham R.
SR
Support for Android apps is the best thing about FydeOS. As most of the applications have moved on cloud, and FydeOS being browser first, makes it... Read review
Seller Details
Seller
FydeOS
Year Founded
2015
HQ Location
Haidian District, Beijing, Beijing
LinkedIn® Page
www.linkedin.com
10 employees on LinkedIn®
Learn more
Stratodesk NoTouch
By Stratodesk
(5)4.3 out of 5
Save to My Lists
  • Overview
    Expand/Collapse Overview
    • Product Description
    How are these determined?Information
    This description is provided by the seller.

    Stratodesk is the leading innovator of an ultra-secure endpoint OS engineered with precision to meet the unique demands of modern enterprises. With zero-trust principles embedded in its core, NoTouch

    Users
    No information available
    Industries
    No information available
    Market Segment
    • 60% Enterprise
    • 40% Mid-Market
  • User Satisfaction
    Expand/Collapse User Satisfaction
    • Stratodesk NoTouch features and usability ratings that predict user satisfaction
    7.9
    Has the product been a good partner in doing business?
    Average: 8.5
    7.9
    Ease of Use
    Average: 8.4
    6.3
    Quality of Support
    Average: 8.1
    7.1
    Ease of Admin
    Average: 8.5
  • What G2 Users Think
    Expand/Collapse What G2 Users Think
    • Jai P.
    JP
    It is easy to manage, deploy, and update our endpoints from a central location. The software is easy to configure and provides a lot of flexibility... Read review
  • Seller Details
    Expand/Collapse Seller Details
    • Seller Details
    Seller
    Stratodesk
    Year Founded
    2010
    HQ Location
    San Francisco, US
    Twitter
    @stratodesk
    19,111 Twitter followers
    LinkedIn® Page
    www.linkedin.com
    25 employees on LinkedIn®
Product Description
How are these determined?Information
This description is provided by the seller.

Stratodesk is the leading innovator of an ultra-secure endpoint OS engineered with precision to meet the unique demands of modern enterprises. With zero-trust principles embedded in its core, NoTouch

Users
No information available
Industries
No information available
Market Segment
  • 60% Enterprise
  • 40% Mid-Market
Stratodesk NoTouch features and usability ratings that predict user satisfaction
7.9
Has the product been a good partner in doing business?
Average: 8.5
7.9
Ease of Use
Average: 8.4
6.3
Quality of Support
Average: 8.1
7.1
Ease of Admin
Average: 8.5
Jai P.
JP
It is easy to manage, deploy, and update our endpoints from a central location. The software is easy to configure and provides a lot of flexibility... Read review
Seller Details
Seller
Stratodesk
Year Founded
2010
HQ Location
San Francisco, US
Twitter
@stratodesk
19,111 Twitter followers
LinkedIn® Page
www.linkedin.com
25 employees on LinkedIn®
Learn more
Netgate TNSR vRouter (Edge / Access / VPN)
By Netgate
0 ratings
Save to My Lists
  • Overview
    Expand/Collapse Overview
    • Product Description
    How are these determined?Information
    This description is provided by the seller.

    Netgate TNSR is a high-speed (exceeding 100 Gbps) virtual router and VPN aggregator. TNSR is the answer for businesses, governments, and xSPs looking for scalable routing without the six-figure price

    We don't have enough data from reviews to share who uses this product. Write a review to contribute, or learn more about review generation.
    Industries
    No information available
    Market Segment
    No information available
  • User Satisfaction
    Expand/Collapse User Satisfaction
    • Netgate TNSR vRouter (Edge / Access / VPN) features and usability ratings that predict user satisfaction
    0.0
    No information available
    0.0
    No information available
    0.0
    No information available
    0.0
    No information available
  • Seller Details
    Expand/Collapse Seller Details
    • Seller Details
    Seller
    Netgate
    Year Founded
    2002
    HQ Location
    Austin, US
    Twitter
    @NetgateUSA
    8,920 Twitter followers
    LinkedIn® Page
    www.linkedin.com
    124 employees on LinkedIn®
Product Description
How are these determined?Information
This description is provided by the seller.

Netgate TNSR is a high-speed (exceeding 100 Gbps) virtual router and VPN aggregator. TNSR is the answer for businesses, governments, and xSPs looking for scalable routing without the six-figure price

We don't have enough data from reviews to share who uses this product. Write a review to contribute, or learn more about review generation.
Industries
No information available
Market Segment
No information available
Netgate TNSR vRouter (Edge / Access / VPN) features and usability ratings that predict user satisfaction
0.0
No information available
0.0
No information available
0.0
No information available
0.0
No information available
Seller Details
Seller
Netgate
Year Founded
2002
HQ Location
Austin, US
Twitter
@NetgateUSA
8,920 Twitter followers
LinkedIn® Page
www.linkedin.com
124 employees on LinkedIn®
Learn more