OpenNebula vs Scalr comparison

OpenNebula and Scalr are both solutions in the Cloud Management category. OpenNebula is ranked #19 with an average rating of 7.0, while Scalr is ranked #27 with an average rating of 10.0. OpenNebula holds a 1.7% mindshare in CM, compared to Scalr’s 0.9% mindshare. Additionally, 100% of OpenNebula users are willing to recommend the solution, compared to 100% of Scalr users who would recommend it.

OpenNebula

Read 15 OpenNebula reviews

3,373 Views
3,204 Comparison Views

100% willing to recommend

Scalr

Read 2 Scalr reviews

1,021 Views
1,021 Comparison Views

100% willing to recommend

OpenNebula

Scalr

Comparison Buyer's Guide

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Executive Summary

We performed a comparison between OpenNebula and Scalr based on real PeerSpot user reviews.

Find out in this report how the two Cloud Management solutions compare in terms of features, pricing, service and support, easy of deployment, and ROI.

To learn more, read our detailed OpenNebula vs. Scalr Report (Updated: June 2026).

Buyer's Guide

OpenNebula vs. Scalr

June 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

OpenNebula

Ranking in Cloud Management

19th

Average Rating

8.2

Reviews Sentiment

7.0

Number of Reviews

Ranking in other categories

No ranking in other categories

Scalr

Ranking in Cloud Management

27th

Average Rating

9.0

Reviews Sentiment

5.8

Number of Reviews

Ranking in other categories

No ranking in other categories

Mindshare comparison

As of July 2026, in the Cloud Management category, the mindshare of OpenNebula is 1.7%, down from 6.8% compared to the previous year. The mindshare of Scalr is 0.9%, up from 0.3% compared to the previous year. It is calculated based on PeerSpot user engagement data.

Cloud Management Mindshare Distribution
Product	Mindshare (%)
OpenNebula	1.7%
Scalr	0.9%
Other	97.4%

Cloud Management

Featured Reviews

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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Shubham Mandavkar

Associate Technical Consultant at a computer software company with 51-200 employees

Modern API design has transformed documentation workflows and supports interactive testing

Scalr helps with API testing and client functionality, which includes a built-in Try It tool similar to Postman, allowing developers to test endpoints, manage environment variables, and see request history. The faster response is due to the CI/CD workflow integrating with GitHub Actions and another tool to automatically update and version documentation as the codebase evolves. Other features include data formatting, where I can convert strings to uppercase, trim white spaces, or concatenate first and last names into a full name field. In scientific contexts, a scalar is a physical quantity described only by magnitude with no direction. In environmental aspects, monitoring and measuring temperature, pressure, or humidity, resource tracking, and calculating mass, volume, density, or time duration reflect the best impact on my organization. One specific outcome I have noticed is scholarly publishing. Scalr is also an open-source platform for born-digital, media-rich publishing, allowing scholars to create interactive online books that integrate high-resolution media with sophisticated archival structures.

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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

"It is quite easy to deploy."

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

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

"It has enabled us to decrease the optics by around 55 to 60%."

"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."

"For our use case, we found the solution to be the best fit when dealing with infrastructure services."

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

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

More OpenNebula pros

"I was able to deal with requests without needing every server on; I could turn them off."

"After all the years of helping enterprises implement API strategies at SmartBear, I can confidently say Scalr is what the industry has been waiting for."

Cons

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

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

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

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

"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."

More OpenNebula cons

"Regarding licensing, if I buy a licensing key, it is beneficial, but if I have a lesser standing, it is not as good."

"We did use AWS autoscaling but Rackspace left something to be desired."

Pricing and Cost Advice

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

"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."

"VRA is very expensive but OpenNebula is free."

"OpenNebula gives good value for money."

"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."

Information not available

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Top Industries

By visitors reading reviews

Financial Services Firm

12%

Comms Service Provider

10%

Computer Software Company

University

Manufacturing Company

23%

Computer Software Company

11%

Construction Company

11%

University

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

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

No data available

Questions from the Community

Ask a question

Earn 20 points

What needs improvement with Scalr?

Scalr can be improved by logical simplification, wrapping complex logic into reusable functions to keep main queries readable. Data validation using functions like is null provides default values w...

See all answers

What is your primary use case for Scalr?

Scalr refers to several distinct technologies, with the most common modern use case involving API documentation and database function. Scalr is a modern alternative to Swagger UI used for creative ...

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What advice do you have for others considering Scalr?

Scalr is deployed on-premises only because Scalr is a physical quantity fully described by magnitude value. Regarding the mathematical engine and scripting language, the core features are generally...

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Comparisons

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Compared 15% of the time

VMware Aria Automation vs OpenNebula

Compared 7% of the time

Nutanix Cloud Manager (NCM) vs OpenNebula

Compared 6% of the time

VMware Aria Operations vs OpenNebula

Compared 5% of the time

Morpheus vs OpenNebula

Compared 5% of the time

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Spacelift vs Scalr

Compared 21% of the time

CloudBolt vs Scalr

Compared 15% of the time

Flexera Cloud Management Platform (CMP) vs Scalr

Compared 13% of the time

Tieto OneCloud vs Scalr

Compared 13% of the time

BMC Cloud Lifecycle Management vs Scalr

Compared 10% of the time

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Product Reports

Buyer's Guide

OpenNebula

June 2026

Download OpenNebula product report

Buyer's Guide

Cloud Management

June 2026

Download Scalr product report

Overview

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.

OpenNebula

Scalr is a cloud management platform designed to help businesses efficiently manage and optimize their cloud infrastructure. It offers automated workflows and policies to streamline operations and enhance productivity.

Scalr stands out in cloud management with its robust scalability, allowing teams to expand their cloud resources effortlessly. By providing administrators with tools for policy enforcement and governance, it ensures compliance and cost control. Scalr's modular architecture supports seamless integration with existing IT infrastructure, allowing organizations to maintain flexibility and efficiency. With Scalr, businesses can focus on strategic initiatives without compromising on operational excellence.

What are the core features of Scalr?

Policy-driven automation: Ensures consistent cloud operations through customized policies.
Cost management tools: Offers real-time insights to optimize spending on cloud resources.
Multi-cloud support: Integrates with major cloud providers for diverse deployment needs.
Self-service interface: Empowers users with streamlined access to required resources.

What are the key benefits of using Scalr?

Efficiency: Automates repetitive tasks to save time and reduce manual errors.
Cost savings: Monitors and manages expenses effectively to prevent budget overruns.
Compliance: Facilitates adherence to industry standards and internal policies.
Scalability: Adjusts to both growth and fluctuations in cloud demand seamlessly.

Scalr is implemented across industries such as financial services and healthcare, where reliability and compliance are crucial. In these sectors, Scalr's automation and governance capabilities streamline operations while ensuring strict regulatory compliance, thereby supporting mission-critical workloads efficiently.

Scalr

Sample Customers

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

JPL, Expedia, Samsung, Acxiom, Accenture, Sony, Merkle, Autodesk

Buyer's Guide

OpenNebula vs. Scalr

June 2026

Free Report: OpenNebula vs. Scalr

Find out what your peers are saying about OpenNebula vs. Scalr and other solutions. Updated: June 2026.

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