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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
7th
Average Rating
8.0
Reviews Sentiment
6.5
Number of Reviews
34
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 September 2025, in the Cloud Management category, the mindshare of CloudStack is 4.3%, down from 6.3% compared to the previous year. The mindshare of OpenNebula is 6.1%, down from 7.1% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Cloud Management Market Share Distribution
ProductMarket Share (%)
OpenNebula6.1%
CloudStack4.3%
Other89.6%
Cloud Management
 

Featured Reviews

Tharun Kumar Reddy Thamatam - PeerSpot reviewer
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.
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

"CloudStack’s private gateway networking feature is what enables us to offer utmost security and confidentially to our customers and partners, by enabling them to connect to their virtual data centers via dedicated, encrypted, private fiber lines that never touch the public internet space. Ease of setup and management are certainly important additional benefits for us on the engineering team."
"CloudStack helped us showcase our features through process visualization and functional solutions."
"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."
"You can use a single API to get things done, rather than multiple APIs on multiple modules."
"We like the virtualization capabilities."
"It is very easy to install and manage. It has the all modules in one node, unlike other software (OpenStack). The product allows a customized look and feel, and the ability to add custom workflows."
"Everything in CloudStack works effectively."
"I have been impressed by CloudStack's most recent updates around Kubernetes. In particular, they have worked with Kubernetes to support the Cluster API, and you can now easily integrate Kubernetes into CloudStack and get access to a lot of good features."
"The solution provides templates for configurations that can easily be exchanged to VMs."
"With a single click, we could set things up and initiate them."
"It's easy to integrate OpenNebula with our IT systems."
"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."
"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."
"OpenNebula has very good integration with SAP Storage."
 

Cons

"The product could improve by embracing newer technologies like GPU virtualization."
"A technology upgrade is one item which could be improved upon a lot."
"Environment is sensitive, so, unlike VMware, you can not afford middle-skilled engineers, they will ruin everything."
"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."
"Accounts, domains, and user accounts are set up with public cloud in mind, not private."
"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 installation of CloudStack can be quite challenging because you need a good understanding of the product before starting."
"I think that container technology in CloudStack is an area that needs to be improved."
"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."
"Hosting platforms are limited so the deployment process needs improvement."
"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 no payment gateways in OpenNebula."
"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."
"The web interface could be better. It's not very difficult to use, but there's room for enhancement."
"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."
 

Pricing and Cost Advice

"​Give an effort to planning. If possible, contract a specialized consultant company for the initial setup and knowledge transfer.​​"
"CloudStack is an open-source product."
"The solution is open-source and free."
"There is no license, so the product is free unless you are buying professional technical support services."
"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."
"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."
"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."
"VRA is very expensive but OpenNebula is free."
"The solution is open source so is free."
"We use the Community Edition, rather than the Enterprise Edition."
"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."
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Top Industries

By visitors reading reviews
Computer Software Company
18%
Educational Organization
12%
Manufacturing Company
8%
Government
6%
Computer Software Company
20%
University
9%
Financial Services Firm
8%
Comms Service Provider
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business13
Midsize Enterprise6
Large Enterprise12
By reviewers
Company SizeCount
Small Business7
Midsize Enterprise6
Large Enterprise3
 

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?
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 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: September 2025.
867,676 professionals have used our research since 2012.