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IBM Rational Test Workbench vs Katalon Studio comparison

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Comparison Buyer's Guide

Executive SummaryUpdated on Sep 11, 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

IBM Rational Test Workbench
Ranking in API Testing Tools
16th
Ranking in Test Automation Tools
28th
Average Rating
7.6
Reviews Sentiment
7.3
Number of Reviews
4
Ranking in other categories
Performance Testing Tools (18th)
Katalon Studio
Ranking in API Testing Tools
4th
Ranking in Test Automation Tools
3rd
Average Rating
8.0
Reviews Sentiment
6.6
Number of Reviews
56
Ranking in other categories
Regression Testing Tools (3rd)
 

Mindshare comparison

As of November 2026, in the API Testing Tools category, the mindshare of IBM Rational Test Workbench is 3.3%, up from 1.1% compared to the previous year. The mindshare of Katalon Studio is 5.9%, down from 12.2% compared to the previous year. It is calculated based on PeerSpot user engagement data.
API Testing Tools Mindshare Distribution
ProductMindshare (%)
Katalon Studio5.9%
IBM Rational Test Workbench3.3%
Other90.8%
API Testing Tools
 

Featured Reviews

reviewer1513668 - PeerSpot reviewer
IT Specialist, ITE at a government with 10,001+ employees
Good reporting and interface, but supports limited types of protocols and requires low-level script editing
It should have more interfaces. In terms of interfaces or protocols, what you can do with Rational is far limited as compared to other products out there. What it does, it does great, but it only gives you limited types of protocols. It supports between 8 to 15 types of protocols, whereas other test tools give you 20 to 30 types of protocols with which you can do testing and convert to script. It records Javascript-based scripts, and you got to know a little bit of Java to basically be able to edit them, but the level of editing you got to do is very low. I like that, but the ability to edit the script is not as good as Parasoft or LoadRunner, which have C-Script.
TM
Quality Automation Specialist at SymphonyAI
Fast UI automation has reduced regression effort and has improved tester onboarding
The best features Katalon Studio offers include how even a manual tester can use it with built-in keywords and recording features. A framework does not need to be built from scratch, unlike other tools. Katalon Studio provides an out-of-the-box automation framework, which allows quick starts, and its built-in keywords and record and playback functionality make it easier for manual testers transitioning to automation. Additionally, the object repository simplifies test creation and makes maintenance more manageable. The test suite and execution profiles also allow easy test organization for environment-specific execution, and the built-in reports provide ready-to-share insights with the team. If I had to select one standout feature, the framework setup stands out as the best feature, as it makes starting automation quickly and straightforwardly without heavy setup. Katalon Studio has positively impacted my organization by helping the team reduce manual regression effort and improve release confidence by catching UI issues earlier. It positively impacted the company by speeding up test execution and allowing faster feedback before releases, which reduces last-minute defects. The quick setup of the framework enabled the team to start automation faster, improving overall QA productivity without increasing team size. Additionally, automated regression tests maintained consistent test coverage and reduced the risk of repetitive manual reports, which overall helped Katalon Studio reduce manual regression effort, improve test consistency, and provide faster feedback to the team, enhancing release quality.

Quotes from Members

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

Pros

"All IBM testing tools are really well integrated."
"Reporting is pretty good. Its interface is also good. I'm overall pretty happy with the functionality and use of IBM Rational Test Workbench."
"IBM Rational integrates the testing software as Rational Test Workbench, which is quite convenient and efficient as it is able to automate the test scripts."
"Using service virtualization, we are able to accelerate the testing and development activity."
"This solution provides for API testing, functional UI testing, performance testing, and service virtualization."
"The solution is easy to learn."
"The scalability of the product is good."
"The report generated using Katalon Studio is extremely valuable."
"The most valuable feature is its automation security capabilities."
"It is a mature product, and it is a good starting point for beginners."
"It is easy for a non-technical person to use and adopt."
"It is good for API testing. It is also good for continuous integration testing. You can connect it to Jenkins."
"The most important feature is the Jenkins integration; it is pretty straight forward and allows us to run nightly builds."
 

Cons

"It should have more interfaces. In terms of interfaces or protocols, what you can do with Rational is far limited as compared to other products out there."
"Implementing custom functions is bit tedious job, as ECMA script does not support some of the standard java-script functions, Also the Script editor window is not user friendly."
"Rational Performance Tester supports cloud technology in the version 8.7, playing test scripts back on the cloud is not stable."
"There are a number of things that they can do to simplify the tools, but the most important thing that they need to do is simplify the installation."
"It should have more interfaces. In terms of interfaces or protocols, what you can do with Rational is far limited as compared to other products out there. What it does, it does great, but it only gives you limited types of protocols. It supports between 8 to 15 types of protocols, whereas other test tools give you 20 to 30 types of protocols with which you can do testing and convert to script. It records Javascript-based scripts, and you got to know a little bit of Java to basically be able to edit them, but the level of editing you got to do is very low. I like that, but the ability to edit the script is not as good as Parasoft or LoadRunner, which have C-Script."
"It would be helpful if they can integrate a feature for performance testing."
"The solution can be further improved with better loading time."
"We have been seeing some error pop-ups that are difficult to understand why they were triggered."
"I would like to see improvements in how Katalon Studio works with iOS applications, especially with React Native applications."
"The reporting is very good, but it could be better."
"The free version of the solution is not user friendly at all."
"The price of the solution is a bit high. It's one of the reasons we decided not to continue using the product."
"It should be faster while executing, and there are some defects, like choosing the new device with the test case."
 

Pricing and Cost Advice

"The pricing is a little bit on the higher side, although it is really good."
"It doesn't really concern me. Licensing is on a yearly basis."
"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."
"Katalon Studio is a free tool."
"There is a free version of the tool to use and support is available through the community forums, but there is a licensed version as well."
"The solution is more affordable than other vendors."
"We are using the free version of Katalon Studio at this point."
"The tool is affordable."
"This product is freeware, so there is no charge for using it."
"I am using the free version."
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Top Industries

By visitors reading reviews
Construction Company
18%
Financial Services Firm
18%
Outsourcing Company
12%
Manufacturing Company
9%
Financial Services Firm
13%
Manufacturing Company
11%
Outsourcing Company
9%
Computer Software Company
8%
 

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

Ask a question
Earn 20 points
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

Rational Test Workbench, IBM Rational Performance Tester, IBM Functional Tester, IBM Rational Test Virtualization Server
No data available
 

Overview

 

Sample Customers

Financial Insurance Management Corp.
Coca-Cola Tesla Black Board TaTa Consultancy Services Sony
Find out what your peers are saying about IBM Rational Test Workbench vs. Katalon Studio and other solutions. Updated: September 2026.
920,769 professionals have used our research since 2012.