CloudStack vs OpenNebula comparison

Read 15 OpenNebula reviews

3,177 Views
3,082 Comparison Views

100% willing to recommend

CloudStack

Comparison Buyer's Guide

Download the report

Executive SummaryUpdated on Dec 17, 2024

CloudStack and OpenNebula are competing in the cloud infrastructure domain. OpenNebula has the upper hand due to its adaptability and ease of deployment across varied infrastructures.

Features: CloudStack offers comprehensive support for hybrid and multi-cloud environments, advanced networking, and security features, and a centralized management system for scalability. OpenNebula has a lightweight footprint, provides a user-friendly interface, and supports flexibility across both private and public cloud platforms.

Room for Improvement: CloudStack can improve by streamlining its resource-intensive deployment process, simplifying the customization process, and enhancing its support for newer virtualization technologies. OpenNebula could benefit from expanding advanced networking capabilities, increasing support for multi-cloud environments, and improving its integration with additional enterprise applications.

Ease of Deployment and Customer Service: OpenNebula is known for its straightforward deployment and strong customer support, making it easy to manage various cloud infrastructures. CloudStack's deployment may require more resources, but it provides extensive documentation and community support for users.

Pricing and ROI: CloudStack is an open-source solution, potentially involving higher initial expenses due to substantial customization and resource needs. OpenNebula, also open-source, presents lower setup costs and an attractive return on investment for small to medium-sized enterprises.

To learn more, read our detailed CloudStack vs. OpenNebula Report (Updated: July 2025).

CloudStack vs. OpenNebula

July 2025

Download the complete report

Helped 865,295 peers since 2012

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

CloudStack

Ranking in Cloud Management

10th

Average Rating

8.0

Reviews Sentiment

6.7

Number of Reviews

Ranking in other categories

No ranking in other categories

OpenNebula

Ranking in Cloud Management

6th

Average Rating

8.2

Reviews Sentiment

7.0

Number of Reviews

Ranking in other categories

No ranking in other categories

Mindshare comparison

As of August 2025, in the Cloud Management category, the mindshare of CloudStack is 4.7%, down from 6.0% compared to the previous year. The mindshare of OpenNebula is 6.6%, down from 6.8% compared to the previous year. It is calculated based on PeerSpot user engagement data.

Cloud Management

Featured Reviews

Nelson Marcos

Engineer Manager at Globo.com

It's easier to provision VMs than other solutions and you can customize it to integrate with load balancers

My teammates have complained about the upgrade. The source code had massive files that had to be merged with our own development to upgrade to the latest version of CloudStack. It was quite painful for them. CloudStack could add some cost management tools to give me some control over the costs associated with the number of users of my services.

Read full review

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.

Read full review

Quotes from Members

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

Pros

"CloudStack provides an environment that is very simple to use, with built-in APIs and a web interface that supports almost all features of AWS and Azure."

"Over the years, we have valued CloudStack for its stability."

"It works, and pretty much always has. Reliability and support for enterprise features, with a multi-tenant interface, makes CloudStack a very compelling solution."

"The platform is very simple to scale-out."

"The back-end database design is simple and straight forward. The user interface is designed with external users in mind. Billing is relatively straightforward with this product. Not being restricted to just one hypervisor was nice."

"You can build your own cloud and make it customizable with APIs."

"Everything in CloudStack works effectively."

"CloudStack helped us showcase our features through process visualization and functional solutions."

More CloudStack pros

"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."

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

"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."

"It is quite easy to deploy."

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

"The most valuable feature of OpenNebula is that it scales very well."

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

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

More OpenNebula pros

Cons

"I encountered some stability issues. When I tried to remove high-capacity virtual machines it took a long time to update, and sometimes the VM status failed to update properly in the cloud database. This occurred multiple times, even though I had sufficient resources."

"The area of improvement could be the regionalization aspect. For example, managing multiple regions or HubStack deployments together was not thought out thoroughly in the versions I used. We faced issues around managing the global infrastructure and had to develop around it."

"The Windows hosts do not get their hostnames from cloud-init."

"The product could improve by embracing newer technologies like GPU virtualization."

"My teammates have complained about the upgrade. The source code had massive files that had to be merged with our own development to upgrade to the latest version of CloudStack. It was quite painful for them. CloudStack could add some cost management tools to give me some control over the costs associated with the number of users of my services."

"There are some minor things that can be improved even more such as, perhaps, a bit more polishing on the GUI side to catch up with the API possibilities (which are really extensive) but otherwise nothing critical."

"It is not widely used so Google does not help very much when you are troubleshooting, and the CloudStack forum is not very active."

"It would be great to have a couple of “external” networks for VPC and have the possibility, for each domain, to choose they type of “external” network."

More CloudStack cons

"The UI, monitoring, and alerting could benefit from further improvements."

"The storage feature that they have is a bit confusing."

"There are no payment gateways in OpenNebula."

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

"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."

"They should add more features like object storage."

"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."

More OpenNebula cons

Pricing and Cost Advice

"CloudStack is an open-source product."

"It is a 100% open-source solution needing just an Apache license. Also, there are no hidden fees to be paid."

"Give an effort to planning. If possible, contract a specialized consultant company for the initial setup and knowledge transfer."

"There is no license, so the product is free unless you are buying professional technical support services."

"The Apache CloudStack is open source, so you do not have licenses to purchase."

"CloudStack is an open source solution, so you don't need to pay anything for it. When our company develops something specially for CloudStack, it is donated to the Apache Software Foundation and provided to anyone that wants to use it."

"The solution is open-source and free."

"As far as I know, CS is still free of charge. If you want to pay some money, Citrix Cloud Platform is based on CS, I think. As for hypervisors – everything as usual, you need to pay for VMware and vCenter. As for XenServer, recently they changed the free feature list, so you may need to pay some money to get useful features like XenMotion."

"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."

"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 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."

See which vendors are best for you

Use our free recommendation engine to learn which Cloud Management solutions are best for your needs.

See recommendations

865,295 professionals have used our research since 2012.

Top Industries

By visitors reading reviews

Computer Software Company

19%

Educational Organization

12%

Manufacturing Company

Comms Service Provider

Computer Software Company

20%

University

Comms Service Provider

Financial Services Firm

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

Questions from the Community

What do you like most about CloudStack?

The initial implementation process was quite good.

What is your experience regarding pricing and costs for CloudStack?

CloudStack is open-source, so there is no cost apart from learning. Billing solutions, if outsourced, come at a moderate cost.

What needs improvement with CloudStack?

CloudStack lacks a billing solution which would complete it as a full 360-degree product. Additionally, more themes and drag-and-drop interfaces could enhance the user experience. Improved document...

What do you like most about OpenNebula?

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

What is your experience regarding pricing and costs for OpenNebula?

OpenNebula gives good value for money.

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...

Nutanix Cloud Infrastructure (NCI) vs CloudStack

Comparisons

Compared 8% of the time

Sangfor HCI - Hyper Converged Infrastructure vs CloudStack

Compared 7% of the time

VMware Cloud Director vs CloudStack

Compared 5% of the time

VMware Aria Automation vs CloudStack

Compared 5% of the time

CloudCheckr vs CloudStack

Compared 3% of the time

More CloudStack Competitors

VMware Aria Automation vs OpenNebula

Compared 13% of the time

Nutanix Cloud Manager (NCM) vs OpenNebula

Compared 12% of the time

VMware Cloud Director vs OpenNebula

Compared 9% of the time

Morpheus vs OpenNebula

Compared 5% of the time

Sangfor HCI - Hyper Converged Infrastructure vs OpenNebula

Compared 3% of the time

More OpenNebula Competitors

Product Reports

Download CloudStack product report

CloudStack

August 2025

Download OpenNebula product report

August 2025

Also Known As

Vmops, Cloud.com

No data available

Overview

Apache CloudStack is open source software designed to deploy and manage large networks of virtual machines, as a highly available, highly scalable Infrastructure as a Service (IaaS) cloud computing platform.

Apache

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.

Sample Customers

GreenQloud, Exoscale, TomTom, ASG, PC Extreme, ISWest, Grid'5000

Akamai, BBC, Fermilab, Terradue, Surf Sara, Produban, Netways, ESA, China Mobile, BlackBerry, Deloitte, Fuze, Telefonica, Trivago, Nokia, Encore Tech, Beeks.