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Flatcar Container Linux vs Ubuntu Linux comparison

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Comparison Buyer's Guide

Executive SummaryUpdated on Jan 25, 2026

Review summaries and opinions

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

Categories and Ranking

Flatcar Container Linux
Ranking in Operating Systems (OS) for Business
41st
Average Rating
8.0
Number of Reviews
1
Ranking in other categories
No ranking in other categories
Ubuntu Linux
Ranking in Operating Systems (OS) for Business
2nd
Average Rating
8.6
Reviews Sentiment
7.3
Number of Reviews
152
Ranking in other categories
OpenStack (1st)
 

Mindshare comparison

As of October 2026, in the Operating Systems (OS) for Business category, the mindshare of Flatcar Container Linux is 0.9%, up from 0.7% compared to the previous year. The mindshare of Ubuntu Linux is 8.2%, down from 11.5% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Operating Systems (OS) for Business Mindshare Distribution
ProductMindshare (%)
Ubuntu Linux8.2%
Flatcar Container Linux0.9%
Other90.9%
Operating Systems (OS) for Business
 

Featured Reviews

YD
Senior Consultant at Capgemini
The solution is stable and allows us to make needed changes
The development teams could sharpen their skills.  They should offer applications on the net I have eight years of experience with Flatcar Container Linux. The version of Flatcar Container Linux that I am using is stable. The scalability of this product is fine. It allows us to make the needed…
reviewer2728158 - PeerSpot reviewer
Associate Cloud Operations Engineer at a tech vendor with 501-1,000 employees
Good compatibility and improvement needed in migration process
For long-term support, it has been good because in most enterprise environments, people still use Ubuntu Linux sixteen, which is quite obsolete now. Other enterprise versions do not support obsolete systems, so supportability is good in terms of Ubuntu Linux. For sustainability, it's quite a significant point of view for every organization. For us, Ubuntu Linux is the preferable way. For others, it might not be, so that is quite a subjective matter itself. The pinpoint of the problem is that they take time because they need specific information. We need to go to AWS first, and then they'll contact the Ubuntu Linux support team itself. This creates a two-way hop for us, which is why it's not that great. It's not really Ubuntu Linux's problem but rather the way we are accessing Ubuntu Linux. The migration part when migrating an application or one version of Ubuntu Linux to another is quite hectic. During the process, one or many applications might crash. That is something they could handle themselves, but I don't think that's something Ubuntu Linux will look into. During a migration project that I was handling, Ubuntu Linux was not completely compatible for the migration process from one application to another. This is an area they could improve in migrating from minor versions to major versions.

Quotes from Members

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

Pros

"Flatcar's support is good, and the version I am using is stable and allows us to make needed changes."
"The solution is user-friendly."
"I like it that Ubuntu is actually free and was one of the first with a decent hardware recognition during installation."
"By using Ubuntu Linux on the cloud, I am reducing costs by at least 22 percent by providing a feasible and secure environment."
"I would recommend it because it is very stable, supports almost every new feature, and almost all open-source projects, with easy support available from the web and professionals."
"Ubuntu Linux has good security features and a lot of software compatibility."
"It keeps you secure from virus and malware attacks."
"It's a free and open source software-defined storage (SDS) that runs on various platforms such as Ubuntu, CentOS, RHEL, IBM Z, among others."
"Ubuntu Linux is very easy to learn, manage, and keep updated."
 

Cons

"The development teams could sharpen their skills. They should offer applications on the net."
"I don't like the graphical interface in Ubuntu and it should be better."
"The vendor must provide an official support team."
"The support team is not good and needs to be improved. The user community is excellent and helpful, but some questions are unanswered. Also, stability and scalability could be improved."
"I want more insights and security features in the pro version, specifically activities and vulnerabilities. When releasing a new version, it's crucial to ensure no vulnerabilities. Sometimes, a new version may have minor vulnerabilities, like one medium and one low. These typically take about two weeks to resolve. More regular patching, especially addressing security vulnerabilities, is essential to improve."
"The problem with the license costs for Ubuntu Linux right now is due to currency exchange, as everything is based on US dollars."
"Sometimes certain tasks are challenging due to issues with the command-line interface. Users who prefer Windows may find it difficult to transition to Linux."
"The product must enable automation using AI."
"Linux does not provide a user-friendly interface."
 

Pricing and Cost Advice

Information not available
"It is a free product."
"Ubuntu Linux is an open-source product."
"This is a free solution."
"There is an annual subscription for this solution."
"The solution does not come with a licensing fee."
"It's an open source solution, but you can make donations if you'd like to."
"It is also manageable and financially affordable."
"I am using the free version. There is no subscription."
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Top Industries

By visitors reading reviews
Comms Service Provider
26%
University
11%
Construction Company
9%
Manufacturing Company
8%
Comms Service Provider
12%
Financial Services Firm
10%
Manufacturing Company
9%
University
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
No data available
By reviewers
Company SizeCount
Small Business86
Midsize Enterprise22
Large Enterprise54
 

Questions from the Community

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Which would you choose - Ubuntu Linux or Oracle Linux?
Ubunto Linux is a complete Linux operating system that is freely available with both community and professional support. This solution is suitable for both desktop and server use. It has a very app...
What is your experience regarding pricing and costs for Ubuntu Linux?
My experience with the pricing, implementation costs, and licenses of Ubuntu Linux shows that it is free software, so the licensing cost is zero. Having the Ubuntu Pro licensing option, where you h...
What needs improvement with Ubuntu Linux?
I think Ubuntu Linux could improve in the area of packages, as Snap packages are being imposed on us and we are migrating to certain versions where we are losing APT. To have a pure terminal experi...
 

Also Known As

No data available
Ubuntu
 

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