CloudStack vs OpenNebula comparison

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CloudStack

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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: December 2025).

CloudStack vs. OpenNebula

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

CloudStack

Ranking in Cloud Management

7th

Average Rating

8.0

Reviews Sentiment

6.5

Number of Reviews

Ranking in other categories

No ranking in other categories

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

Mindshare comparison

As of January 2026, in the Cloud Management category, the mindshare of CloudStack is 2.8%, down from 6.7% compared to the previous year. The mindshare of OpenNebula is 3.7%, down from 8.1% compared to the previous year. It is calculated based on PeerSpot user engagement data.

Cloud Management Market Share Distribution
Product	Market Share (%)
CloudStack	2.8%
OpenNebula	3.7%
Other	93.5%

Cloud Management

Featured Reviews

Tharun Kumar Reddy Thamatam

Senior Infrastructure Consultant at Infosys

Achieving seamless infrastructure management with optimized network and user access controls

I believe enhancements could be made in CloudStack, particularly in the management servers. I had the opportunity to collaborate with one of the Apache CloudStack developers, leading to the installation of additional agents for better information retrieval from hypervisors. We implemented configurations, ensuring consistency across hosts and VMs. We also utilized Ansible or YAML files to automate password upgrades during patching activities and database management, showcasing our customization efforts for improvement. For future releases, it would be beneficial if Apache enhanced CloudStack by integrating alerting systems directly. We've had instances where hypervisors experienced overloads without prior alerts, so proactive alerts within the tool would better prepare us for addressing issues swiftly, preventing disruption in business operations. A portal summarizing system metrics alongside alert capabilities would greatly enhance our operational efficiency.

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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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Quotes from Members

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

Pros

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

"Multiple types of hypervisor support, multi-zone support, and VPC are great valuable features."

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

"CloudStack supports every operating system that supports hypervisors, which makes the product more attractive, compared to vCloud Director or Azure."

"When compared to OpenStack, CloudStack is also an open-source platform that is continuously improving its features and capabilities with each new version release. Having worked with CloudStack 4.7, 4.14, and most recently, 4.17, I have noticed significant enhancements in the platform's features and customer experience, such as the introduction of a new user interface in the latest release. Notably, the latest versions have made major improvements to VM live migrations, making them more efficient and effective."

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

"Valuable features include that it is a user-friendly portal, VPN P2S and S2S possibilities, and it's easy to manage accounts and limits."

"CloudStack is a very feature-rich product; it gives you a lot of control over your VM networks and has extensive integration with storage plugins where you can use many open source tools to bring storage into your CloudStack environment for backups or even to run VMs."

More CloudStack pros

"With a single click, we could set things up and initiate them."

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

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

"OpenNebula has very good integration with SAP Storage."

"It is quite easy to deploy."

"The service feature appeals most to us, thus it is the most valuable."

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

More OpenNebula pros

Cons

"VPN P2S is cutting all connections except the CloudStack environment for the user when he is connected. I would like to have VPN like Cisco's AnyConnect."

"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."

"Environment is sensitive, so, unlike VMware, you can not afford middle-skilled engineers, they will ruin everything."

"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."

"A technology upgrade is one item which could be improved upon a lot."

"I would like to see support for native VLAN, and fault-tolerance."

"Accounts, domains, and user accounts are set up with public cloud in mind, not private."

"This product needs a lot improvement on the development side. Every new version introduces new bugs. It lacks many features needed for NFV like DPDK, SR-IOV support, etc."

More CloudStack cons

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

"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."

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

"Hosting platforms are limited so the deployment process needs improvement."

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

"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."

More OpenNebula cons

Pricing and Cost Advice

"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."

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

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

"The solution is open-source and free."

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

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

"CloudStack is an open-source product."

"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."

"VRA is very expensive but OpenNebula is free."

"OpenNebula gives good value for money."

"The solution is open source so is free."

"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."

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Top Industries

By visitors reading reviews

Computer Software Company

14%

Educational Organization

10%

Manufacturing Company

Comms Service Provider

Computer Software Company

14%

Financial Services Firm

10%

University

10%

Comms Service Provider

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

By reviewers
Company Size	Count
Small Business	13
Midsize Enterprise	6
Large Enterprise	12

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

Questions from the Community

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?

Enhancements for CloudStack can focus on integrating more hypervisors, as mentioned regarding current features. We're working on a new feature that will allow for certain limited functions, but ove...

What is your primary use case for CloudStack?

My usual use cases for CloudStack involve an AWS style private cloud or public cloud. I can deploy an AWS style cloud using the open source tool that is CloudStack. The use case depends on the cust...

What do you like most about OpenNebula?

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

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...

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...

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Product Reports

Download CloudStack product report

CloudStack

January 2026

Download OpenNebula product report

January 2026

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.