OpenNebula vs Spot by Flexera comparison

OpenNebula and Spot - A Flexera company are both solutions in the Cloud Management category. OpenNebula is ranked #8 with an average rating of 7.5, while Spot - A Flexera company is ranked #23 with an average rating of 8.5. OpenNebula holds a 3.7% mindshare in CM, compared to Spot - A Flexera company’s 1.7% mindshare. Additionally, 100% of OpenNebula users are willing to recommend the solution, compared to 100% of Spot - A Flexera company users who would recommend it.

OpenNebula

Read 15 OpenNebula reviews

2,852 Views
2,738 Comparison Views

100% willing to recommend

Spot by Flexera

Read 5 Spot by Flexera reviews

1,639 Views
590 Comparison Views

100% willing to recommend

OpenNebula

Spot by Flexera

Comparison Buyer's Guide

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Executive SummaryUpdated on Jan 19, 2026

OpenNebula and Spot by Flexera are competing cloud management platforms. OpenNebula has an advantage in customization and ease of integration, while Spot by Flexera excels in cost optimization and automation tools justifying its pricing.

Features: OpenNebula offers hybrid cloud management, open-source capabilities, and customizable solutions, making it appealing for flexible deployments. Spot by Flexera provides automated cost optimization, advanced workload automation, and robust analytics tools, focusing on minimizing cloud expenses.

Room for Improvement: OpenNebula could enhance its cost optimization and workload automation capabilities, improve analytics for better resource management, and strengthen its integration with cloud ecosystems. Spot by Flexera may enhance customization features, flexibility in integration with diverse IT systems, and user interface usability for simpler interactions.

Ease of Deployment and Customer Service: OpenNebula offers straightforward deployment with hybrid cloud configurations, appreciated for ease of integration. Spot by Flexera provides a streamlined deployment process, designed for complex environments, with comprehensive customer support as a priority.

Pricing and ROI: OpenNebula typically presents lower setup costs, attractive for cost-effective private cloud solutions. Spot by Flexera involves higher initial investment justified by long-term returns, focusing on significant cost savings through optimal resource management.

To learn more, read our detailed OpenNebula vs. Spot by Flexera Report (Updated: December 2025).

Buyer's Guide

OpenNebula vs. Spot by Flexera

December 2025

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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

8th

Average Rating

8.2

Reviews Sentiment

7.0

Number of Reviews

Ranking in other categories

No ranking in other categories

Spot by Flexera

Ranking in Cloud Management

23rd

Average Rating

8.6

Reviews Sentiment

7.5

Number of Reviews

Ranking in other categories

Server Virtualization Software (14th), Cloud Operations Analytics (1st), Cloud Analytics (2nd), Compute Service (9th), Containers as a Service (CaaS) (4th), Cloud Cost Management (5th)

Mindshare comparison

As of January 2026, in the Cloud Management category, the mindshare of OpenNebula is 3.7%, down from 8.1% compared to the previous year. The mindshare of Spot by Flexera is 1.7%, up from 0.6% compared to the previous year. It is calculated based on PeerSpot user engagement data.

Cloud Management Market Share Distribution
Product	Market Share (%)
OpenNebula	3.7%
Spot	1.7%
Other	94.6%

Cloud Management

Featured Reviews

FOURES Jean-Philippe

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.

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Karan Saini

Dev Ops Engineer at a construction company with 11-50 employees

Intelligent autoscaling has cut compute costs and now manages ephemeral workloads efficiently

I think overall Spot is quite good. The UI is powerful, but it can feel a bit dense for some new users. More guided onboarding would help teams adopt advanced features faster, and deeper insights into Kubernetes resource usage would be beneficial. Overall, it is a really good platform that is quite mature and stable. 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. Overall, I think Spot is a really good and stable tool.

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Quotes from Members

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

Pros

"It is quite easy to deploy."

"OpenNebula is lightweight, stable, and easy to customize."

"The live migration feature has been great and is something we use very often."

"The solution provides templates for configurations that can easily be exchanged to VMs."

"OpenNebula is easy to deploy and manage compared to other solutions like OpenStack."

"It makes maintenance very easy and stress-free for our teams."

"It's easy to integrate OpenNebula with our IT systems."

"What's best about OpenNebula that people like is that it's easy to deploy. It's also easy to manage. It's interesting because people choose OpenNebula over other solutions because of the ease of management."

More OpenNebula pros

"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."

"The solution helps us to manage and scale automatically whenever there is a limit to the increase in the application workflow."

"Spot has positively impacted our organization by automating cloud resource management, which has significantly cut costs and improved efficiency."

"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."

Cons

"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."

"As with all enterprise software licensing, the pricing is not intuitive and must be negotiated; grandfathered contracts are better than anything offered today."

"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."

"There are small things that are hard. For example, making sure that it is going to be installable on public clouds."

"They should add more features like object storage."

"The protocol for clusterization is rough and doesn't work well."

"There are no payment gateways in OpenNebula."

"Backup features are only available in the enterprise edition. The community version lacks a good solution for making backups."

More OpenNebula cons

"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."

"I have not seen a return on investment yet."

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."

"OpenNebula gives good value for money."

"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."

"We use the Community Edition, rather than the Enterprise Edition."

"The solution is open source so is free."

"VRA is very expensive but OpenNebula is free."

Information not available

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Top Industries

By visitors reading reviews

Computer Software Company

14%

Financial Services Firm

10%

University

10%

Comms Service Provider

Manufacturing Company

18%

Computer Software Company

15%

Healthcare Company

Financial Services Firm

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

By reviewers
Company Size	Count
Small Business	7
Midsize Enterprise	6
Large Enterprise	3

No data available

Questions from the Community

What do you like most about OpenNebula?

The live migration feature has been great and is something we use very often.

See all answers

What needs improvement with OpenNebula?

The web interface could be better. It's not very difficult to use, but there's room for enhancement. Another area for improvement is the integration with hardware to manage the lower layer of the n...

See all answers

What is your primary use case for OpenNebula?

Previously, we were using VMware, but recently, we've started using OpenNebula for cloud management. As a big cloud provider, it helps give customers increased control over their clusters. We use L...

See all answers

What do you like most about Spot Ocean?

The solution helps us to manage and scale automatically whenever there is a limit to the increase in the application workflow.

See all answers

What needs improvement with Spot Ocean?

Spot can be improved by adding deeper multi-cloud integrations, enhancing real-time security automation, and continuously making advancements based on customer feedback.

See all answers

What is your primary use case for Spot Ocean?

I have been using Spot for five years. My main use case for Spot is cloud optimization.We use Spot for optimization by leveraging real-time optimization as well as auto-optimization. The company al...

See all answers

Comparisons

CloudStack vs OpenNebula

Compared 34% of the time

Nutanix Cloud Manager (NCM) vs OpenNebula

Compared 13% of the time

VMware Aria Automation vs OpenNebula

Compared 7% of the time

VMware Cloud Director vs OpenNebula

Compared 7% of the time

Morpheus vs OpenNebula

Compared 7% of the time

More OpenNebula Competitors

IBM Turbonomic vs Spot by Flexera

Compared 11% of the time

ProsperOps vs Spot by Flexera

Compared 6% of the time

Pump.co vs Spot by Flexera

Compared 6% of the time

CAST AI vs Spot by Flexera

Compared 4% of the time

AWS Fargate vs Spot by Flexera

Compared 4% of the time

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Product Reports

Buyer's Guide

OpenNebula

January 2026

Download OpenNebula product report

Buyer's Guide

Spot by Flexera

January 2026

Download Spot by Flexera product report

Also Known As

No data available

Spot Ocean, Spot Elastigroup, Spot Eco

Overview

OpenNebula provides the most simple but feature-rich and flexible solution for the comprehensive management of virtualized data centers to enable private, public and hybrid IaaS clouds. OpenNebula interoperability makes cloud an evolution by leveraging existing IT assets, protecting your investments, and avoiding vendor lock-in.

OpenNebula is a turnkey enterprise-ready solution that includes all the features needed to provide an on-premises (private) cloud offering, and to offer public cloud services.

OpenNebula

Spot by Flexera provides automated cost optimization and container management with multi-cloud integration, achieving up to 70% savings and greater efficiency. It adapts to demand changes using AI-driven insights.

Spot enables organizations to optimize cloud infrastructure in environments such as Kubernetes, AKS, EKS, and AWS. It offers advanced automation features for managing resources, leading to reduced overhead and increased production output. Spot's intelligent autoscaling and node replacement capabilities enhance scalability and reliability. While the platform lacks some granularity in EKS Kubernetes insights, it remains stable and mature, helping organizations minimize costs and improve resource utilization. Opportunities for improvement include OCI support, more detailed multi-cloud integrations, and enhanced Kubernetes insights.

What features does Spot by Flexera offer?

Automated Cost Optimization: Efficiently manages expenditure and provides significant savings.
Advanced Container Management: Streamlines container management across multiple platforms.
Multi-Cloud Integration: Seamlessly integrates with major cloud providers.
Intelligent Autoscaling: Automatically adjusts resources based on demand changes.
Zero-Downtime Node Replacement: Ensures seamless transitions without interrupting workflows.
Integration with AWS: Enhances scalability and system reliability.

What are the benefits of using Spot by Flexera?

Cost Efficiency: Achieves up to 70% cost savings through intelligent solutions.
Increased Production Output: Improves overall productivity by streamlining processes.
Scalability and Reliability: Offers robust autoscaling and no-downtime node replacement.
Support for Financial Governance: Aids in effective financial management and planning.

In industries heavily reliant on cloud-based services, Spot by Flexera is crucial for optimizing resource management and cost efficiency. Organizations leveraging Spot in sectors like technology and finance benefit from real-time optimization techniques and improved governance processes.

Spot - A Flexera company

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

Buyer's Guide

OpenNebula vs. Spot by Flexera

December 2025

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