OpenNebula vs Spot by Flexera comparison

Why PeerSpot?

OpenNebula and Spot - A Flexera company are both solutions in the Cloud Management category. OpenNebula is ranked #24 with an average rating of 7.0, while Spot - A Flexera company is ranked #20 with an average rating of 9.0. OpenNebula holds a 1.5% mindshare in CM, compared to Spot - A Flexera company’s 2.0% 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

3,579 Views
3,400 Comparison Views

100% willing to recommend

Spot by Flexera

Read 6 Spot by Flexera reviews

6,726 Views
2,421 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: September 2026).

Buyer's Guide

OpenNebula vs. Spot by Flexera

September 2026

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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

24th

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

20th

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 (3rd), Compute Service (10th), Containers as a Service (CaaS) (3rd), Cloud Cost Management (6th)

Mindshare comparison

As of September 2026, in the Cloud Management category, the mindshare of OpenNebula is 1.5%, down from 6.1% compared to the previous year. The mindshare of Spot by Flexera is 2.0%, up from 1.1% compared to the previous year. It is calculated based on PeerSpot user engagement data.

Cloud Management Mindshare Distribution
Product	Mindshare (%)
Spot by Flexera	2.0%
OpenNebula	1.5%
Other	96.5%

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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Bruna Müller

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.

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

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

"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."

"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."

"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."

"OpenNebula has very good integration with SAP Storage, is easy to use, has a good UI, and is very scalable."

"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."

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

More OpenNebula pros

"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."

"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."

"By using Spot by Flexera across a year, we were able to save more than 500,000 euros."

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

"The solution offers both block access and file access, making it a nice solution for customers."

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

Cons

"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."

"They should add more features like object storage."

"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."

"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 front-facing API can be improved to support lots of requests when the platform is huge with lots of virtual resources."

"I would like to see OpenNebula add more integration with REST API. XML-RPC API is good, but it becomes a pain to form a resting output."

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

"Template management also needs improvement in OpenNebula because it's inferior right now."

More OpenNebula cons

"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."

"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 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."

Pricing and Cost Advice

"The solution is open source so is free."

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

"VRA is very expensive but OpenNebula is free."

"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."

Information not available

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Top Industries

By visitors reading reviews

Comms Service Provider

11%

Financial Services Firm

11%

Computer Software Company

10%

Outsourcing Company

Construction Company

13%

Comms Service Provider

12%

Financial Services Firm

11%

Healthcare Company

10%

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

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

By reviewers
Company Size	Count
Small Business	2
Large Enterprise	6

Questions from the Community

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Earn 20 points

What needs improvement with Spot Ocean?

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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...

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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...

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Comparisons

CloudStack vs OpenNebula

Compared 14% of the time

VMware Aria Automation vs OpenNebula

Compared 8% of the time

Nutanix Cloud Manager (NCM) vs OpenNebula

Compared 6% of the time

BMC Helix Cloud Security vs OpenNebula

Compared 5% of the time

VMware Aria Operations vs OpenNebula

Compared 5% of the time

More OpenNebula Competitors

IBM Turbonomic vs Spot by Flexera

Compared 4% of the time

AWS Lambda vs Spot by Flexera

Compared 4% of the time

DoiT vs Spot by Flexera

Compared 3% of the time

AWS Fargate vs Spot by Flexera

Compared 3% of the time

Apache Spark vs Spot by Flexera

Compared 2% of the time

More Spot by Flexera Competitors

Product Reports

Buyer's Guide

OpenNebula

September 2026

Download OpenNebula product report

Buyer's Guide

Spot by Flexera

August 2026

Download Spot by Flexera product report

Also Known As

No data available

Spot Ocean, Spot Elastigroup, Spot Eco

Overview

OpenNebula offers scalability, ease of deployment, and integration capabilities that enhance cloud management for enterprises. It supports both virtual and bare metal resources, providing a versatile cloud management experience.

OpenNebula provides a robust platform for building, managing, and automating private and public clouds. Its compatibility with platforms like VMware, KVM, and containers makes it ideal for businesses hosting virtual private clouds and deploying Kubernetes clusters. OpenNebula's API and SDK facilitate automation and integration, allowing organizations to connect with IT systems effectively. Despite its strengths, improvements in object storage, REST API integration, and UI enhancements are needed. The documentation can be disorganized, and users encounter challenges with upgrades and community support.

What are key OpenNebula features?

Scalability: Easily manage resources for growing cloud environments.
User-Friendly Interface: Simplifies cloud management tasks.
Integration: Connects seamlessly with IT systems using robust API and SDK.
Hypervisor Support: Works with multiple hypervisors and container platforms.

What benefits do users find in OpenNebula?

Efficiency: Streamlines cloud operations, reducing management complexities.
Versatility: Offers support for both virtual and bare metal resources.
Community and Documentation: Though needing improvement, provides valuable resources for users.
Cost-Effectiveness: Lightweight nature minimizes resource expenditure.

OpenNebula implementation spans industries where cloud automation and management are critical. Companies utilize OpenNebula for deploying private clouds and managing infrastructure. Its support for Kubernetes clusters is beneficial in tech-driven sectors, highlighting OpenNebula's adaptability to different operational needs.

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

September 2026

Free Report: OpenNebula vs. Spot by Flexera

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