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KVM vs VMware vSphere Foundation comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Nov 6, 2024

Review summaries and opinions

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

ROI

Sentiment score
8.5
KVM users save $20,000 monthly due to its open-source nature, eliminating license fees and offering cost-effective virtualization.
Sentiment score
4.7
Organizations benefit from server consolidation and VMware vSphere for improved scalability, reduced costs, and enhanced flexibility in infrastructure.
KVM definitely saves costs since it is open-source and does not obligate us to pay for licenses as necessary with other virtualization solutions.
Chief Technology Officer at a manufacturing company with 11-50 employees
In an environment where the infrastructure has to be up for monitoring and controlling physical infrastructure like water plants, it has absolutely returned on its investment.
OT Technologist at a energy/utilities company with 201-500 employees
There is flexibility and interoperability with multi-mode architectures that accommodate both on-prem and cloud realities.
CIO and Chief Digital Officer at Reliance Industries Ltd
Server consolidation is one return on investment where we can use one server for multiple workloads.
Enterprise Virtualization Manager at a financial services firm with 10,001+ employees
 

Customer Service

Sentiment score
8.7
KVM relies on community support; effectiveness varies, with some preferring paid options like Red Hat for dedicated assistance.
Sentiment score
6.1
VMware vSphere Foundation garners mixed reviews, with strengths in responsiveness but concerns over management, support, pricing, and regional resources.
Paid support is also obtainable from companies like Red Hat for more critical issues.
Chief Technology Officer at a manufacturing company with 11-50 employees
There is nonstop support available around the world, which allows issues to be resolved continuously without interruption, regardless of whether the problem occurs in the USA, India, or another location.
Product Manager at MSiT Technology
I believe support deserves a rating of ten out of ten.
IT Infrastruture Consultant at Devoteam Management Consulting
Now, with Broadcom's management, I would rate it a three out of ten.
Enterprise Virtualization Manager at a financial services firm with 10,001+ employees
 

Scalability Issues

Sentiment score
7.7
KVM offers high scalability for enterprise environments, leveraging Linux kernel architecture, though rapid expansion may challenge larger companies.
Sentiment score
7.7
VMware vSphere Foundation is praised for its scalability and integration, facilitating easy expansion and efficient workload management.
The return on investment is high because we can maximize the use of one server for multiple workloads.
Enterprise Virtualization Manager at a financial services firm with 10,001+ employees
It's straightforward to procure additional licenses, install them on the host and add them to the same cluster.
Technology Solution Consultant at DWP Technologies
You can simply add more hosts to your VMware stack seamlessly, scaling up vertically or horizontally.
Senior System Administrator at Interactive Group
 

Stability Issues

Sentiment score
7.8
KVM is generally stable and reliable, though occasional issues arise during I/O tasks or hardware changes, requiring careful handling.
Sentiment score
7.6
VMware vSphere Foundation is praised for stability, low management needs, reliable performance, and effective performance monitoring in data centers.
Stability is optimal.
Enterprise Virtualization Manager at a financial services firm with 10,001+ employees
Frequent updates are required due to constant security challenges and attacks.
Solutions Manager at ICSI
It is a standard tool and is considered very stable.
Quality Engineer at KML
 

Room For Improvement

KVM needs user interface improvements, better networking, enhanced tools, platform compatibility, optimized resources, and improved support and documentation.
VMware vSphere Foundation suffers from licensing complexity, high costs, procurement confusion, limited cloud management, and performance monitoring challenges.
In comparison to VMware, which offers a more balanced set of management features, KVM could improve in terms of user-friendly tooling.
Chief Technology Officer at a manufacturing company with 11-50 employees
I highly recommend that continuous support for perpetual licenses be provided.
Cloud Infrastructure Engineer at Safaricom Ethiopia plc
VMware needs to improve cost efficiency, especially in Pakistan, as customers often seek more affordable solutions.
Technology Solution Consultant at DWP Technologies
Recently, VMware shifted its licensing models, and they should streamline it.
Senior System Administrator at Interactive Group
 

Setup Cost

KVM is a cost-effective, open-source virtualization platform often preferred over VMware, with affordable support options enhancing its appeal.
Enterprise users find VMware vSphere Foundation expensive, citing high licensing costs, support challenges, and increased pricing post-Broadcom acquisition.
Compared to VMware and Microsoft, KVM offers better pricing and licensing options.
Chief Technology Officer at a manufacturing company with 11-50 employees
It's expensive, however, the stability it offers is optimal.
Enterprise Virtualization Manager at a financial services firm with 10,001+ employees
In Brazil, we are increasingly using open-source alternatives like Proxmox due to their lower prices in comparison.
Product Manager at MSiT Technology
During one project, the price doubled or even tripled before implementation, causing issues with clients.
Cloud Infrastructure Engineer at Safaricom Ethiopia plc
 

Valuable Features

KVM excels in performance, scalability, ease of management, and security, offering seamless Linux integration and cost-effective virtualization.
VMware vSphere Foundation provides scalable, user-friendly infrastructure management with robust features, enhancing IT efficiency, resilience, and cost reduction.
The most valuable feature of KVM is its superior real-time performance, which results in lower latency compared to alternatives like VMware and Microsoft.
Chief Technology Officer at a manufacturing company with 11-50 employees
vSphere Foundation is valuable due to its scalability, reliability, and ease of management.
Technology Solution Consultant at DWP Technologies
VMware provides the tools needed to move environments between private and public clouds seamlessly.
Product Manager at MSiT Technology
The virtual stack of vCenter, its distributed resources system, high availability engines, and the ability to move VM workloads from one host to another are outstanding.
Senior System Administrator at Interactive Group
 

Categories and Ranking

KVM
Ranking in Server Virtualization Software
10th
Average Rating
8.0
Reviews Sentiment
7.4
Number of Reviews
43
Ranking in other categories
No ranking in other categories
VMware vSphere Foundation
Ranking in Server Virtualization Software
7th
Average Rating
8.6
Reviews Sentiment
6.1
Number of Reviews
16
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of August 2026, in the Server Virtualization Software category, the mindshare of KVM is 6.7%, down from 10.0% compared to the previous year. The mindshare of VMware vSphere Foundation is 1.2%, up from 0.3% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Server Virtualization Software Mindshare Distribution
ProductMindshare (%)
VMware vSphere Foundation1.2%
KVM6.7%
Other92.1%
Server Virtualization Software
 

Featured Reviews

BB
Chief Technology Officer at a manufacturing company with 11-50 employees
Low latency in mission-critical environments with different virtualization environments
The most valuable feature of KVM is its superior real-time performance, which results in lower latency compared to alternatives like VMware and Microsoft. The ability to switch from one VM to another efficiently, thanks to the implementation of a real-time kernel, ensures delays remain minimal, thereby meeting our organization's performance requirements. This improved latency is critical because any delay in voice transmission could lead to life-threatening situations. Additionally, KVM being open-source means that we are not obligated to pay for licenses, which significantly reduces costs and simplifies license handling for ourselves and on behalf of customers.
Youssef-Hmani - PeerSpot reviewer
IT Infrastruture Consultant at Devoteam Management Consulting
Proactive monitoring has improved infrastructure visibility and simplifies long term management
I remember when I was working as a consultant and implemented Site Recovery Manager from VMware. It was working fine and is a very good solution. Although I used it five or six years in the past, it is very beneficial for customers as a function to build disaster recovery.
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Top Industries

By visitors reading reviews
Computer Software Company
11%
Comms Service Provider
10%
Manufacturing Company
9%
Financial Services Firm
8%
Manufacturing Company
17%
Outsourcing Company
14%
Financial Services Firm
11%
Healthcare Company
6%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business22
Midsize Enterprise9
Large Enterprise14
By reviewers
Company SizeCount
Small Business3
Midsize Enterprise3
Large Enterprise10
 

Questions from the Community

Why KVM??? Help please!
KVM scales better, orchestration better, performs better and supports a wider range of hardware and, also, you can implement at ZERO cost and with a very powerful web interface for management, from...
Why KVM??? Help please!
Small support team, small cluster, low core count, use VMware products Large support team, large clusters with many cores, use KVM. KVM scales better, orchestration better, performs better and supp...
Why KVM??? Help please!
Far from being an expert, my opinion is that the positive sides of KVM are: Lower costs and open-source which gives the abilities to customize it according to the specific needs of each customer.
What is your experience regarding pricing and costs for VMware vSphere Foundation?
I don't know the exact pricing for the VMware vSphere Foundation, but I think the last license model to upgrade is three or four times more expensive.
What needs improvement with VMware vSphere Foundation?
I remember when I was working as a consultant and implemented Site Recovery Manager from VMware. It was working fine and is a very good solution. Although I used it five or six years in the past, i...
What is your primary use case for VMware vSphere Foundation?
I am not specifically in a partnership with VMware, but I am using many tools from VMware. For example, vRealize Operations is a very good tool to manage and monitor infrastructure. I believe it is...
 

Overview

 

Sample Customers

MediaWiki, Wikimedia Foundation, Wikipedia, Wikivoyage, Wikidata, Wikiversity, Commons
Information Not Available
Find out what your peers are saying about KVM vs. VMware vSphere Foundation and other solutions. Updated: August 2026.
909,725 professionals have used our research since 2012.