IBM Rational Test Workbench vs Postman comparison

IBM and Postman are both solutions in the API Testing Tools category. IBM is ranked #15, while Postman is ranked #3 with an average rating of 8.6. IBM holds a 0.6% mindshare in APIT, compared to Postman’s 10.6% mindshare. Additionally, 100% of IBM users are willing to recommend the solution, compared to 95% of Postman users who would recommend it.

IBM Rational Test Workbench

Read 4 IBM Rational Test Workbench reviews

185 Views
0 Comparison Views

100% willing to recommend

Postman

Read 62 Postman reviews

5,073 Views
8 Comparison Views

95% willing to recommend

IBM Rational Test Workbench

Postman

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Executive SummaryUpdated on Sep 11, 2024

IBM Rational Test Workbench and Postman are popular tools for testing and development. IBM Rational Test Workbench is preferred for its comprehensive testing capabilities, though Postman is valued for its simplicity and intuitive design.

Features: IBM Rational Test Workbench supports a wide range of test types like functional, performance, and regression testing. It offers an all-in-one testing solution. Postman focuses on API testing with powerful collaboration tools and automated testing capabilities, making it ideal for API-centric tasks.

Room for Improvement: Users suggest IBM Rational Test Workbench improve setup complexity and update frequency. Postman users seek enhancements in automation capabilities and better integration with other tools.

Ease of Deployment and Customer Service: IBM Rational Test Workbench has a challenging deployment process requiring more time and expertise, whereas Postman offers swift and straightforward deployment. IBM Rational Test Workbench is rated higher in customer service compared to Postman’s self-service approach.

Pricing and ROI: IBM Rational Test Workbench involves higher setup costs, but users feel the investment is justified by its extensive capabilities and ROI. Postman provides a cost-effective solution with a strong return on investment, appealing to budget-conscious users seeking efficient API testing solutions.

To learn more, read our detailed IBM Rational Test Workbench vs. Postman Report (Updated: June 2025).

Buyer's Guide

IBM Rational Test Workbench vs. Postman

June 2025

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Helped 859,129 peers since 2012

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

15th

Average Rating

7.6

Reviews Sentiment

7.3

Number of Reviews

Ranking in other categories

Performance Testing Tools (21st), Test Automation Tools (39th)

Postman

Ranking in API Testing Tools

3rd

Average Rating

8.2

Reviews Sentiment

7.3

Number of Reviews

Ranking in other categories

API Management (10th), API Monitoring Software (1st)

Mindshare comparison

As of June 2025, in the API Testing Tools category, the mindshare of IBM Rational Test Workbench is 0.6%, up from 0.2% compared to the previous year. The mindshare of Postman is 10.6%, down from 18.1% compared to the previous year. It is calculated based on PeerSpot user engagement data.

API Testing Tools

Featured Reviews

KashifJamil

CEO at Xcelliti

Good integration with other tools, stable, scales easily

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. This includes the workbench as well as the other tools. In the future, I would like to see the other types of tests supported, that are not already covered in the DevOps approach. This would include, for example, penetration testing.

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Anagha Mahadik

Product Development Manager at a university with 5,001-10,000 employees

Solution simplifies web service testing with impressive speed and accessibility

It is very easy for me to use and I highly prefer it compared to SoapUI and other products for performing its job. It is more handy and faster. It has impacted us very nicely. Postman is used for free by us. I'm not sure if there might be a paid version for multiple users. It is a very good product used for development. It is easy to install, as well as to learn, particularly for new users, even if they are not developers. I taught my business analyst to use it. I just showed them once, and it was easy for them to understand. For example, I gave them the URL and request format and asked them to test independently. They were able to use it on their own and do their testing as well. It was a good experience, especially for generally smart people, like those we usually hire in our company. It is pretty easy to explain, and learning it is not complex.

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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

"Reporting is pretty good. Its interface is also good. I'm overall pretty happy with the functionality and use of IBM Rational Test Workbench."

"This solution provides for API testing, functional UI testing, performance testing, and service virtualization."

"Postman is open-source and free to use."

"Postman helps to write pre-request scripts and make a collection out of each request. You don’t have to spend time writing or copying the requests. The solution lets you integrate multiple environments and their features. Either the tool’s pro or premium version lets you do the merge and pull request for the Git directly."

"Postman helps us to automate the API testing in the team."

"The solution is stable."

"The most valuable feature of Postman is the large libraries."

"The user interface is very easy to learn and use, and it is a lightweight application."

"In Postman, we have an option to directly import a call, make it a Postman collection, and execute it in a batch. This feature is very useful. It saves a lot of time. The manual effort is also reduced when we can just pick it in a Postman collection and then run and execute it to get the results."

"We can also submit requests multiple times and it allows us to capture the response each time by using utility scripts."

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. 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."

"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."

"We'd like to see some better UI in newer versions."

"Postman could be improved by providing options for performance testing of APIs."

"There are definitely features that could be improved; for example, if you derive it from Ready API, maybe Postman can be a good contender and replicate some features such as more scripting and control over API calls."

"If we have a certain build on one machine it won't work with another build even if we are using the same URL. It would give us a connection refuse. So developing environment compatibility would make it better."

"I would like to have a code snippet where I can write a code and for the responses of the endpoints to be validated using my custom business conditions."

"Postman does not have database validation available, which affects its scalability."

"We have previously used Tosca which allowed us to verify information using authentications. It would be useful if this was also possible using Postman. In a future release, Postman should connect to DB."

"It would be better if we could integrate programming languages like .NET, Java, and JavaScript. It could also be more user-friendly."

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."

"Its price is moderate as compared to other competitors. The version that we are using is not open source, so it is not free."

"I use the tool's free version."

"The solution has a licensing fee which might be prohibitive."

"This is an open source solution."

"This solution offers a free version."

"The solution's price is reasonable."

"Unlike APIs, the solution does not require a license."

"This tool is open-source and free to download and use."

Top Industries

By visitors reading reviews

Financial Services Firm

29%

Computer Software Company

11%

Manufacturing Company

11%

Non Profit

Financial Services Firm

21%

Computer Software Company

16%

Insurance Company

Manufacturing Company

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

No data available

Questions from the Community

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How does Postman compare with Apache JMeter?

Postman lets you easily define variables, which then get updated automatically. This is a huge time-saver and makes processes very efficient. We can also export the test cases we create and share t...

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What do you like most about Postman?

The product is easy to implement.

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What is your experience regarding pricing and costs for Postman?

Postman is much cheaper than the other tools. I am not aware of the current pricing for Postman because that's taken care of by the client; we just pay and they simply create options. On a per-pers...

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Comparisons

OpenText Functional Testing vs IBM Rational Test Workbench

Compared 34% of the time

ReadyAPI Test vs IBM Rational Test Workbench

Compared 34% of the time

OpenText Enterprise Performance Engineering (LoadRunner Enterprise) vs IBM Rational Test Workbench

Compared 31% of the time

More IBM Rational Test Workbench Competitors

ReadyAPI Test vs Postman

Compared 19% of the time

Tricentis Tosca vs Postman

Compared 16% of the time

Apache JMeter vs Postman

Compared 15% of the time

Katalon Studio vs Postman

Compared 15% of the time

Parasoft SOAtest vs Postman

Compared 8% of the time

Product Reports

Buyer's Guide

Performance Testing Tools

May 2025

Download IBM Rational Test Workbench product report

Buyer's Guide

Postman

June 2025

Download Postman product report

Also Known As

Rational Test Workbench, IBM Rational Performance Tester, IBM Functional Tester, IBM Rational Test Virtualization Server

No data available

Overview

IBM Rational Test Workbench provides a comprehensive test automation solution for mobile applications, regression testing, integration technologies and performance and scalability testing. It helps you build intelligent and interconnected enterprise applications that can be deployed on traditional and cloud infrastructures. With Rational Test Workbench, you can significantly reduce test cycle times, moving integration testing earlier in the development lifecycle.

IBM

Postman's Tools Support Every Stage of the API Lifecycle. Through design, testing and full production, Postman is there for faster, easier API development - without the chaos.

Postman

Sample Customers

Financial Insurance Management Corp.

PayPal, Shopify, Microsoft, Adobe, Atlassian, Twitter, BestBuy, Coursera

Buyer's Guide

IBM Rational Test Workbench vs. Postman

June 2025

Free Report: IBM Rational Test Workbench vs. Postman

Find out what your peers are saying about IBM Rational Test Workbench vs. Postman and other solutions. Updated: June 2025.

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