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OpenNebula vs Spot by Flexera comparison

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Comparison Buyer's Guide

Executive SummaryUpdated on Jan 19, 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

OpenNebula
Ranking in Cloud Management
27th
Average Rating
8.2
Reviews Sentiment
7.0
Number of Reviews
15
Ranking in other categories
No ranking in other categories
Spot by Flexera
Ranking in Cloud Management
19th
Average Rating
8.6
Reviews Sentiment
7.5
Number of Reviews
6
Ranking in other categories
Server Virtualization Software (14th), Cloud Operations Analytics (1st), Cloud Analytics (3rd), Compute Service (10th), Containers as a Service (CaaS) (4th), Cloud Cost Management (10th)
 

Mindshare comparison

As of November 2026, in the Cloud Management category, the mindshare of OpenNebula is 1.5%, down from 5.0% compared to the previous year. The mindshare of Spot by Flexera is 2.1%, up from 1.4% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Cloud Management Mindshare Distribution
ProductMindshare (%)
Spot by Flexera2.1%
OpenNebula1.5%
Other96.4%
Cloud Management
 

Featured Reviews

AB
CTO at Encha
A highly scalable solution that gives good value for money, but it does not have payment gateways
OpenNebula's templates are weak, and it could do something to make template creation a lot easier to use. The solution has a template for every single VM you create, which is not clever. You should be able to use a template for many different virtual machines. There are no payment gateways in OpenNebula.
Bruna Müller - PeerSpot reviewer
License manager at a financial services firm with 10,001+ employees
Centralized asset data has transformed how we manage licenses and make cost-saving decisions
One problem that we faced using Spot by Flexera is that in certain servers, the data was not being updated correctly, and we had a certain delay. For example, someone was using a computer, and then this user received a new one. In Spot by Flexera, we could see both computers, the old and the new one, but the system was not recognizing that the old one was no longer being used. We had a couple of IT assets that were not being used, and we had this information in our internal servers, but Spot by Flexera was not able to update on time. We had to fix this information manually.

Quotes from Members

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

Pros

"It makes maintenance very easy and stress-free for our teams."
"It's easy to integrate OpenNebula with our IT systems."
"For the entire data center, as a private cloud, I believe that user management, expert management, and the virtual data center is completely magic for the users."
"OpenNebula is lightweight, stable, and easy to customize."
"It has enabled us to decrease the optics by around 55 to 60%."
"For our use case, we found the solution to be the best fit when dealing with infrastructure services."
"The ability to use it almost like a public cloud for an organization is a big asset, as it will create a value proposition and can control costs in a great way."
"OpenNebula is easy to deploy and manage compared to other solutions like OpenStack."
"Cost saving is the main benefit, and the manual effort required for reviewing and purchasing savings plans and other RIs is something we do not have to manage manually now, as we get automatic suggestions from Spot."
"The solution offers both block access and file access, making it a nice solution for customers."
"<p>Spot has positively impacted our organization by automating cloud resource management, which has significantly cut costs and improved efficiency.</p>"
"By using Spot by Flexera across a year, we were able to save more than 500,000 euros."
"My compute costs have reduced, capacity and production output have increased, and my overhead for maintaining custom scripts or doing some of the tasks manually has been saved."
"The solution helps us to manage and scale automatically whenever there is a limit to the increase in the application workflow."
 

Cons

"As with all enterprise software licensing, the pricing is not intuitive and must be negotiated; grandfathered contracts are better than anything offered today."
"It should have a simple REST API like most other tools. It's the industry standard format. An XML-RPC API gives you an XML document that you have to convert and then do something with that. REST API endpoint provides outputs in a JSON document. I would also like to see support for user data or heat templates, which OpenStack offers, but OpenNebula doesn't have this yet."
"The storage feature that they have is a bit confusing."
"The front-facing API can be improved to support lots of requests when the platform is huge with lots of virtual resources."
"The web interface could be better. It's not very difficult to use, but there's room for enhancement."
"Hosting platforms are limited so the deployment process needs improvement."
"They have been saying for the past two and a half years that they would develop a feature to hot-add RAM and CPU, but it does not work."
"Template management also needs improvement in OpenNebula because it's inferior right now."
"One problem that we faced using Spot by Flexera is that in certain servers, the data was not being updated correctly, and we had a certain delay."
"The solution doesn't have support from OCI, and it should start working to onboard OCI."
"I have not seen a return on investment yet."
"I chose a rating of nine because it may sometimes be a bit overwhelming for newcomers, and there are also a few areas in which the EKS Kubernetes level granularity is a little missing."
"There are no particular areas for improvement I can identify."
 

Pricing and Cost Advice

"The licensing for OpenNebula used to be free, but now it's no longer free. A customer contacted me asking to move to another provider because of the changes in the licensing terms for OpenNebula. I have no information on how much the OpenNebula license is because the customer pays for it, and I only do the integration."
"VRA is very expensive but OpenNebula is free."
"OpenNebula gives good value for money."
"The solution is open source so is free."
"We use the Community Edition, rather than the Enterprise Edition."
"OpenNebuoa has recently come up with a new subscription model that is economical and a lot of new customers are choosing this as it is an easy subscription model."
Information not available
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Top Industries

By visitors reading reviews
Comms Service Provider
13%
Financial Services Firm
12%
Computer Software Company
9%
Manufacturing Company
7%
Comms Service Provider
14%
Construction Company
12%
Financial Services Firm
11%
Healthcare Company
10%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business7
Midsize Enterprise6
Large Enterprise3
By reviewers
Company SizeCount
Small Business2
Large Enterprise6
 

Questions from the Community

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What needs improvement with Spot Ocean?
One problem that we faced using Spot by Flexera is that in certain servers, the data was not being updated correctly, and we had a certain delay. For example, someone was using a computer, and then...
What is your primary use case for Spot Ocean?
For the past two years, I have been developing a project to implement Spot by Flexera as a software asset management tool. It is used to manage all the IT assets and software licenses within all th...
What advice do you have for others considering Spot Ocean?
The interface of Spot by Flexera was very simple to use. Spot by Flexera Academy had lots of important information that made the usage even easier. In general, I do not think there are any addition...
 

Also Known As

No data available
Spot Ocean, Spot Elastigroup, Spot Eco
 

Overview

 

Sample Customers

Akamai, BBC, Fermilab, Terradue, Surf Sara, Produban, Netways, ESA, China Mobile, BlackBerry, Deloitte, Fuze, Telefonica, Trivago, Nokia, Encore Tech, Beeks.
Freshworks, Zalando, Red Spark, News, Trax, ETAS, Demandbase, BeesWa, Duolingo, intel, IBM, N26, Wix, EyeEm, moovit, SAMSUNG, News UK, ticketmaster
Find out what your peers are saying about OpenNebula vs. Spot by Flexera and other solutions. Updated: November 2026.
920,769 professionals have used our research since 2012.