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: April 2026).

CloudStack vs. OpenNebula

April 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

CloudStack

Ranking in Cloud Management

8th

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

15th

Average Rating

8.2

Reviews Sentiment

7.0

Number of Reviews

Ranking in other categories

No ranking in other categories

Mindshare comparison

As of May 2026, in the Cloud Management category, the mindshare of CloudStack is 2.3%, down from 5.5% compared to the previous year. The mindshare of OpenNebula is 1.9%, down from 7.4% compared to the previous year. It is calculated based on PeerSpot user engagement data.

Cloud Management Mindshare Distribution
Product	Mindshare (%)
CloudStack	2.3%
OpenNebula	1.9%
Other	95.8%

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

"CloudStack has reduced the time to market for the delivery of new products."

"I liked the separation of the isolated network versus the shared network."

"It gives us the ability to manage and segregate a guest network with openvSwitch and VLAN IDs."

"You can use a single API to get things done, rather than multiple APIs on multiple modules."

"CloudStack is highly stable."

"CloudStack provides an easy way to have high availability (HA) of the virtual machines and helps with a better SLA."

"The initial implementation process was quite good."

"You can manage infrastructure with a few people, since product is monolithic."

More CloudStack pros

"OpenNebula has very good integration with SAP Storage."

"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."

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

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

"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."

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

"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."

More OpenNebula pros

Cons

"We did encounter issues with stability, and the main issue was secondary storage. When it is not available, XenServers and hypervisors are affected. And CS doesn’t do anything to reboot, or fix. Come to think of it, maybe it shouldn’t, considering their approach – CS just orchestrates everything else on the hypervisor and storage level."

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

"CS has very descriptive logging, and every time I faced issues and asked for help, I didn’t get any reply from the community. Reason? Its quite obvious. CS runs on specific environments, unique to each case. So, unless it is a functional issue of CS, nobody can help you. All issues were resolved by myself going through logs. This is another reason why you need smart enough people to manage it. Engineers must have knowledge of hypervisors and understand how CS interacts with them."

"With all that simplicity come limitations that need to be understood and planned for: Accounts, domains, and user accounts are set up with public cloud in mind, not private."

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

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

"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."

"It would be a good to have more specific error messages within administration processes (e.g. problem with creating new instance)."

More CloudStack 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."

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

"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."

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

"The web interface could be better. It's not very difficult to use, but there's room for enhancement."

"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."

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

More OpenNebula cons

Pricing and Cost Advice

"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."

"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."

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

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

"CloudStack is an open-source product."

"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."

"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."

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

"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."

"VRA is very expensive but OpenNebula is free."

"OpenNebula gives good value for money."

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Top Industries

By visitors reading reviews

Educational Organization

Financial Services Firm

Comms Service Provider

Computer Software Company

Financial Services Firm

12%

Computer Software Company

Comms Service Provider

University

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 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...

What advice do you have for others considering OpenNebula?

I recommend it, especially if you need a management interface for a small to medium private cloud. I would rate OpenNebula an eight out of ten.

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Product Reports

Download CloudStack product report

CloudStack

May 2026

Download OpenNebula product report

May 2026

Also Known As

Vmops, Cloud.com

No data available

Overview

CloudStack offers an easy-to-manage platform compatible with multiple hypervisors, enabling seamless networking and efficient workload scaling. Its advanced APIs and open-source nature facilitate automation and customization, making it ideal for extensive cloud environments.

CloudStack is recognized for ease of setup, robust networking, and hypervisor compatibility. Supporting a range of workloads, it scales efficiently, offering flexible features like VM migration, private networking, and multi-zone support. Its user-friendly open-source design aids troubleshooting and customization, making it ideal for managing broad cloud deployments. Despite needing upgrades in interface and integration with third-party vendors and container technology, CloudStack remains a strong choice for businesses seeking effective virtualization solutions. Improvements in documentation, regional management, and emerging tech support would enhance usability and performance.

What are CloudStack's notable features?

Hypervisor compatibility: Supports diverse virtualization technologies for flexible deployment.
Robust networking: Ensures reliable and scalable network infrastructure management across zones.
Advanced APIs: Facilitates automation and integration to streamline cloud operations.
VM migration: Enhances operational flexibility with seamless virtual machine relocations.
Private networking: Provides secure and isolated network environments for critical tasks.
Multi-zone support: Offers scalable solutions for distributed cloud management.

What benefits and ROI should users consider?

Open-source model: Allows extensive customization without licensing costs, enhancing ROI.
Ease of management: Simplifies operations, reducing time and resources spent on maintenance.
Scalability: Enables growth and adaptability, fostering agility in expanding businesses.
Flexibility: Supports various workloads and environments, meeting diverse operational needs.

CloudStack is implemented across industries, used in managing virtual environments, offering IaaS in public, private, and hybrid cloud models. Companies use it for internal virtualization and customer service, integrating with hypervisors across data centers to orchestrate virtual machines and support development and testing globally.

Apache

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.

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.