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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
151
Ranking in other categories
OpenStack (1st)
 

Mindshare comparison

As of September 2026, in the Operating Systems (OS) for Business category, the mindshare of Flatcar Container Linux is 0.9%, up from 0.6% compared to the previous year. The mindshare of Ubuntu Linux is 8.1%, down from 11.9% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Operating Systems (OS) for Business Mindshare Distribution
ProductMindshare (%)
Ubuntu Linux8.1%
Flatcar Container Linux0.9%
Other91.0%
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 main feature of the solution is it has a command-line editor."
"One of the most valuable features of Ubuntu Linux is how easy it is to manage."
"There are many features I like about this solution, but one that stands out, is that it allows me to easily install new packages and to have recent packages available."
"I rate Ubuntu Linux ten all the way."
"It has a nice user interface and provides frequent updates."
"The solution is easy to install and easy to update."
"Ubuntu doesn't use a lot of resources, so I think that's pretty cool, and it's totally like Microsoft."
"The solution is stable."
 

Cons

"The development teams could sharpen their skills. They should offer applications on the net."
"We'd like to have a bit more of a friendly user interface."
"A problem we have encountered when installing the package is that certain packages are not available, which requires downloading of them on our part."
"Furthermore, the Unity desktop and the advertisment integration of third parties are horrible."
"It should be easier and lighter. I am more experienced in working with CentOS, and I find CentOS much easier to use than Ubuntu. Ubuntu is more complicated than CentOS. Ubuntu is also heavier for hardware than centOS."
"In terms of what could be improved, I would say management and storage. Mostly, the storage mechanism."
"I would like to see the group policies and the GUI improved in the next release."
"You need a lot of bandwidth during the initial setup in order to pull from the repository. Without good bandwidth, you'll get cut off and the implementation will fail."
"You have to do a lot of configurations yourself. It is not very user friendly, but if you wanted to be a technical person, you may use it."
 

Pricing and Cost Advice

Information not available
"​Old equipment works for at least two or three years more, which means a significant savings.​"
"There are no payments to be made towards any licensing costs attached to the solution."
"Ubuntu is a free product."
"There are no licensing fees, it's an open-source solution."
"Ubuntu Linux is an open-source product."
"On a personal level, I'm using the free version."
"We don't pay a licensing fee for the solution."
"Ubuntu Linux is free to use."
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Top Industries

By visitors reading reviews
Comms Service Provider
23%
University
11%
Construction Company
9%
Manufacturing Company
8%
Comms Service Provider
12%
Financial Services Firm
9%
Manufacturing Company
9%
University
8%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
No data available
By reviewers
Company SizeCount
Small Business85
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?
Ubuntu Linux is almost free, but it has some professional services that require payment if you choose to use them. For a low-cost application server, Ubuntu Linux is a good choice, or for an enterp...
What needs improvement with Ubuntu Linux?
I was thinking that Ubuntu Linux and Windows would work on the same machine. With Windows 11, they came together, so it is a good thing. On the GUI, when I use SSH or PuTTY or what is called a cons...
 

Also Known As

No data available
Ubuntu
 

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