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Katalon Studio vs k6 Open Source comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on May 21, 2025

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

k6 Open Source
Ranking in Regression Testing Tools
22nd
Average Rating
7.6
Reviews Sentiment
7.9
Number of Reviews
2
Ranking in other categories
Load Testing Tools (10th)
Katalon Studio
Ranking in Regression Testing Tools
3rd
Average Rating
8.0
Reviews Sentiment
6.6
Number of Reviews
56
Ranking in other categories
API Testing Tools (6th), Test Automation Tools (2nd)
 

Mindshare comparison

As of August 2026, in the Regression Testing Tools category, the mindshare of k6 Open Source is 1.2%, up from 0.7% compared to the previous year. The mindshare of Katalon Studio is 6.0%, down from 15.6% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Regression Testing Tools Mindshare Distribution
ProductMindshare (%)
Katalon Studio6.0%
k6 Open Source1.2%
Other92.8%
Regression Testing Tools
 

Featured Reviews

NalinGoonawardana - PeerSpot reviewer
Principal Consultant ( Test automation - Performance testing) at TTC Global (TTC) at TTC at a tech services company with 51-200 employees
Offers good scalability and has the ability to integrate with various systems and services
One area where k6 could improve is by introducing a GUI similar to JMeter. While k6 is a powerful tool for performance testing, it leans heavily towards coding. Having a GUI, even if it is a low-code approach, could make it more accessible to a broader audience. It would be beneficial to strike a balance where basic tasks can be performed graphically through a user-friendly interface, while still allowing the flexibility for more complex operations through code, similar to how JMeter operates. This could enhance the user experience and make k6 more approachable for those who may not be as comfortable with scripting.
Ramanagowda Hullur - PeerSpot reviewer
Senior Automation Engineer at Stryker
Recording limitations and remote access challenges have affected desktop application testing
Katalon Studio has proven effective in our deliverables, particularly in designing the framework where other tools typically require coding in client libraries such as Python or Java. With Katalon Studio, there is no such complexity, allowing us to organize projects modularly based on folder structures without needing to write separate code. The self-healing feature for web application automation and its built-in CI/CD ecosystem integration eliminates the need for external tools for pipeline setup. Katalon Studio excels in CI/CD integration, providing an inbuilt ecosystem without the need for external setup, and it features a postings structure along with keyword and library availability. Newcomers to the team can easily adapt to the setup or project structure, which contributes to its popularity, along with its low-code or no-code capability that allows for a comprehensive platform supporting web, mobile, API, and desktop automation. The self-healing mechanism for test cases autonomously identifies issues with locators and ensures they continue functioning, which is impressive, along with the robust object repository. Katalon Studio has significantly aided our team, especially when clients expect deliveries for CI/CD integration that requires automation test scripts to run on a daily schedule. The self-healing feature automatically identifies available locators for elements in the DOM, ensuring that test cases remain functional. Katalon Studio has positively impacted our organization by facilitating faster delivery when clients have urgent requirements. We can deliver quickly based on urgency due to the features Katalon Studio provides. This has led to significant reductions in time spent on framework configuration, designing, and training individuals who are unfamiliar with the tool, helping us save both time and costs.

Quotes from Members

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

Pros

"The standout feature of k6 is its strong focus on API performance testing."
"The tool's big advantage is that it is more performance-test oriented for experienced testers who know what they are doing. In a normal working setup, performance engineers frequently work with DevOps and development teams. For these teams, k6 Open Source's syntax is much simpler and easier to understand and apply in the working process."
"The tool is easy to use. The product gives me the flexibility to use Selenium. I can also use my Java capabilities in the solution."
"The basic framework and project organization is very good."
"Katalon Studio has positively impacted our organization by helping our team save a lot of time by automating repetitive testing, allowing us to test faster, find issues earlier, improve test accuracy, and reduce manual effort."
"I like the feature where you can define a model that represents your website and then reuse the components from the model, as it makes creating more test cases easy."
"The most valuable feature of Katalon Studio is that everything can be managed from one platform."
"For a free solution, it's very good."
"The recording feature of this product is very valuable for our testing purposes."
"Katalon Studio is easier to use compared to SmartBear TestComplete."
 

Cons

"One area where k6 could improve is by introducing a GUI similar to JMeter."
"It would be helpful if they can integrate a feature for performance testing."
"One improvement would be if it could support more programming languages such as JavaScript or Python. Right now, it is only on Groovy, which I think is not a too popular language."
"I've seen that our clients are not truly aware of the power behind Katalon."
"Currently, I'm the only one who can use it because I have a Mac. It is giving a hard time to my team members who are on Linux."
"They need to work on documentation to make it more centralized and easier to find what you are looking for."
"We found that Katalon Studio crashes a lot of the time and it would be very good if it were more stable."
"Restricted choice for scripting language (just Groovy)."
"Currently, I'm the only one who can use it because I have a Mac. It is giving a hard time to my team members who are on Linux. My team members are using Linux, and Katalon doesn't support Linux very well. It keeps on crashing. It crashes and shuts down almost every time they save their work, so they are not able to use it. It should have good support for Linux. We don't know what the problem is. If the Katalon team can pick up this issue, it will be very helpful."
 

Pricing and Cost Advice

Information not available
"We were using the free version of this tool."
"Its pricing is quite reasonable. If you require their help in getting started, then there is a professional services fee on top of the product license cost."
"The pricing is good. It is the market average."
"This product is freeware, so there is no charge for using it."
"The tool's licensing costs are yearly."
"In terms of pricing, Katalon, Selenium, and Cypress all represent a similar level of investment. The software for these tools are either true open source or almost open source (because they charge a small fee), so pricing is a neutral point for me."
"The tool is affordable."
"Price-wise, Katalon Studio is a costly product. Considering what the solution provides its users with, I can say that price-wise, Katalon Studio is an okay product."
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Top Industries

By visitors reading reviews
Computer Software Company
13%
Financial Services Firm
12%
Construction Company
9%
Retailer
8%
Financial Services Firm
14%
Manufacturing Company
10%
Computer Software Company
10%
Outsourcing Company
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
No data available
By reviewers
Company SizeCount
Small Business21
Midsize Enterprise14
Large Enterprise25
 

Questions from the Community

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What is your experience regarding pricing and costs for Katalon Studio?
Pricing felt reasonable for the features provided, especially considering the time saved during the automation setup and execution. From a user perspective, Katalon Studio offers good value, partic...
What needs improvement with Katalon Studio?
I feel nothing needs improvement for Katalon Studio, as it is already the best in the industry, providing the best enhancement for users. Katalon Studio is already top-notch with no need to improve.
What is your primary use case for Katalon Studio?
My main use case for Katalon Studio is to work on many projects, and my tester has four years of experience in testing, which allows me to specialize in functional testing, regression, web, and mob...
 

Also Known As

Load Impact
No data available
 

Overview

 

Sample Customers

rackspace, salesforce.com, IBM, servicenow, Nasdaq, JWT
Coca-Cola Tesla Black Board TaTa Consultancy Services Sony
Find out what your peers are saying about Katalon Studio vs. k6 Open Source and other solutions. Updated: August 2026.
909,725 professionals have used our research since 2012.