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OpenNebula vs Spot by Flexera comparison

 

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
19th
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
20th
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 (9th), Containers as a Service (CaaS) (3rd), Cloud Cost Management (7th)
 

Mindshare comparison

As of July 2026, in the Cloud Management category, the mindshare of OpenNebula is 1.7%, down from 6.8% compared to the previous year. The mindshare of Spot by Flexera is 2.0%, up from 1.0% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Cloud Management Mindshare Distribution
ProductMindshare (%)
OpenNebula1.7%
Spot by Flexera2.0%
Other96.3%
Cloud Management
 

Featured Reviews

FOURES Jean-Philippe - PeerSpot reviewer
Products Manager at a tech services company with 501-1,000 employees
Reliable, simple to manage, and offers great technical support
The support of VXLAN fits with our network management. Thanks to this we can propose mixed solutions using virtual resources on OpenNebula and bare metal servers hosted in our facilities linked to each other on the sale network. This use case is very useful when some applications need bare metal power (Kubernetes workers, huge databases, AI models computations, et cetera). The cluster management is very useful for splitting our different clusters (mutual vs dedicated). We can manage deployments and capacity planning without pain. The API is also really simple and it helped us to develop the Terraform provider to manage OpenNebula like any other cloud infrastructure.
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

"OpenNebula has given us tremendous knowledge about cloud computing and about Cloud Management platforms, commonly known as CMP."
"It's easy to integrate OpenNebula with our IT systems."
"It has enabled us to decrease the optics by around 55 to 60%."
"With a single click, we could set things up and initiate them."
"I'll definitely recommend OpenNebula because it's an open-source solution that's effortless to set up, and the total cost of ownership is low."
"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."
"The solution provides templates for configurations that can easily be exchanged to VMs."
"I also like the ability to build custom functions. I can define a function where I have two types of views and configure the dependencies. The virtual data centers concept allows me to define users. If a user wants to join certain kinds of machines, the host and the other user won't see them. It gives me the flexibility to define multiple views and data centers in one place."
"Spot has positively impacted our organization by automating cloud resource management, which has significantly cut costs and improved efficiency."
"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 helps us to manage and scale automatically whenever there is a limit to the increase in the application workflow."
"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 offers both block access and file access, making it a nice solution for customers."
 

Cons

"The web interface could be better. It's not very difficult to use, but there's room for enhancement."
"An area for improvement in OpenNebula is the number of features it has. The solution doesn't have that many cloud features compared to other solutions. You'd say, "Okay, simplicity over a rich feature list?" Some say, "No, I need a big machine or a cloud interface for my customers to manage resources. I don't have to go and do it for them." Some people do it that way, and it works, but I'd like to improve the limited features in OpenNebula."
"Most of the competitors are offering some sort of billing software to transform their installation to work as a small-sized public cloud, but those offerings from OpenNebula are still missing."
"The protocol for clusterization is rough and doesn't work well."
"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."
"They should add more features like object storage."
"As with all enterprise software licensing, the pricing is not intuitive and must be negotiated; grandfathered contracts are better than anything offered today."
"There are no payment gateways in OpenNebula."
"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."
"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."
"I have not seen a return on investment yet."
"There are no particular areas for improvement I can identify."
"The solution doesn't have support from OCI, and it should start working to onboard OCI."
 

Pricing and Cost Advice

"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."
"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."
"The solution is open source so is free."
"OpenNebula gives good value for money."
"VRA is very expensive but OpenNebula is free."
"We use the Community Edition, rather than the Enterprise Edition."
Information not available
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Top Industries

By visitors reading reviews
Financial Services Firm
12%
Comms Service Provider
10%
Computer Software Company
9%
University
7%
Financial Services Firm
13%
Manufacturing Company
13%
Construction Company
8%
Computer Software Company
7%
 

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

Ask a question
Earn 20 points
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...
 

Comparisons

 

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: June 2026.
902,988 professionals have used our research since 2012.