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CloudStack vs OpenNebula comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Dec 17, 2024

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
7.0
Number of Reviews
31
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
15
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of July 2025, in the Cloud Management category, the mindshare of CloudStack is 4.8%, down from 6.0% compared to the previous year. The mindshare of OpenNebula is 6.8%, up from 6.8% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Cloud Management
 

Featured Reviews

Wido Den Hollander - PeerSpot reviewer
A solution that strikes a balance between user-friendliness, scalability, and stability
The market keeps changing, and so does technology. I think that container technology in CloudStack is an area that needs to be improved. Regarding container technology, Kubernetes is something many people want to use and something which, as of now, many are using currently. However, there is still room for improvement in Kubernetes, particularly with networking functionality and network virtualization. When it comes to what needs to be improved in CloudStack, I would say that it should stay the way it is currently. It should continue being a stable product that people can rely on since many may be inclined to follow the latest trends and hype, which is not always good for a solution's stability. It is crucial to prioritize stability, which is a key factor that companies seek. In my view, the platform could benefit from adding more metrics. More metrics would offer more insights and data on the platform's performance, utilization, and usage. Overall, I believe that having more metrics available would be highly desirable.
FOURES Jean-Philippe - PeerSpot reviewer
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.

Quotes from Members

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

Pros

"​You can build your own cloud and make it customizable with APIs​."
"We had a relevant reduction of bureaucracy tasks."
"You can use a single API to get things done, rather than multiple APIs on multiple modules."
"The product gives us the ability to orchestrate large virtual environments and is flexible enough to allow us to configure it for what we need. We value the flexibility of the networking feature set as well as the ability to build virtual private clouds."
"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."
"Killer features for me were: support for many hypervisors, ability to match business logic, "everything in one box," available APIs."
"The API with CloudStack made integration into various external facing web applications simple enough."
"The structuring of the components and isolated environments helped us when using parts of the framework at different levels of product development."
"The service feature appeals most to us, thus it is the most valuable."
"The solution provides templates for configurations that can easily be exchanged to VMs."
"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."
"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."
"It makes maintenance very easy and stress-free for our teams."
"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."
"With a single click, we could set things up and initiate them."
"The live migration feature has been great and is something we use very often."
 

Cons

"Accounts, domains, and user accounts are set up with public cloud in mind, not private."
"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."
"Lack of support for third-party software vendors such as Veeam and Zerto creates limitations on comprehensive offerings which would include backup and disaster recovery."
"The main reason why we started looking for another solution: backups, replication, HA, and dependency on secondary storage. CS is quite sensitive for infrastructure, and any kind of network disruption between CS and secondary storage leads to VM hanging."
"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."
"It is not widely used so Google does not help very much when you are troubleshooting, and the CloudStack forum is not very active."
"The product does not have an easily implementable payment gateway."
"The number of contributors to this solution is relatively small compared to other solutions. However, if more frequent users of CloudStack contribute to the open-source community, it will significantly enhance the overall community experience and make it more useful for everyone involved."
"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."
"As with all enterprise software licensing, the pricing is not intuitive and must be negotiated; grandfathered contracts are better than anything offered today."
"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."
"They should add more features like object storage."
"The front-facing API can be improved to support lots of requests when the platform is huge with lots of virtual resources."
"Backup features are only available in the enterprise edition. The community version lacks a good solution for making backups."
"There are small things that are hard. For example, making sure that it is going to be installable on public clouds."
"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."
 

Pricing and Cost Advice

"CloudStack is an open-source product."
"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."
"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."
"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."
"​Give an effort to planning. If possible, contract a specialized consultant company for the initial setup and knowledge transfer.​​"
"The Apache CloudStack is open source, so you do not have licenses to purchase."
"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."
"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."
"The solution is open source so is free."
"OpenNebula gives good value for money."
"We use the Community Edition, rather than the Enterprise Edition."
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Top Industries

By visitors reading reviews
Computer Software Company
20%
Educational Organization
11%
Financial Services Firm
8%
Manufacturing Company
7%
Computer Software Company
20%
University
10%
Financial Services Firm
9%
Comms Service Provider
7%
 

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 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...
 

Also Known As

Vmops, Cloud.com
No data available
 

Overview

 

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.
Find out what your peers are saying about CloudStack vs. OpenNebula and other solutions. Updated: July 2025.
862,499 professionals have used our research since 2012.