IBM Rational Test Workbench vs Postman Enterprise comparison

IBM and Postman are both solutions in the API Testing Tools category. IBM is ranked #14, while Postman is ranked #1 with an average rating of 8.8. IBM holds a 1.8% mindshare in APIT, compared to Postman’s 9.8% 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

732 Views
278 Comparison Views

100% willing to recommend

Postman Enterprise

Read 65 Postman Enterprise reviews

4,193 Views
2,977 Comparison Views

95% willing to recommend

IBM Rational Test Workbench

Postman Enterprise

Comparison Buyer's Guide

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Executive SummaryUpdated on Nov 2, 2025

IBM Rational Test Workbench and Postman Enterprise are notable competitors in software testing solutions. Postman Enterprise leads with more advanced features, outweighing its higher pricing.

Features: IBM Rational Test Workbench provides extensive automation capabilities, integration with diverse environments, and comprehensive testing options. Postman Enterprise, however, targets collaborative API lifecycle management, offers a user-friendly design, and streamlines API workflows, enhancing team collaboration.

Room for Improvement: IBM Rational Test Workbench could benefit from reducing setup complexity and enhancing its user interface. It also requires simplified reporting features. Postman Enterprise may improve by integrating with more third-party tools, offering offline functionalities, and enhancing its API testing documentation.

Ease of Deployment and Customer Service: IBM Rational Test Workbench is known for its complex setup and strong support, which ensures smooth integration into workflows. Postman Enterprise shines with its cloud-based model, minimal deployment needs, and effective customer service for swift support and implementation.

Pricing and ROI: IBM Rational Test Workbench offers competitive prices with lower initial costs, potentially yielding quicker ROI. Postman Enterprise, despite a higher price point, is valued for its feature set that provides substantial long-term benefits, leading to a higher ROI through improved productivity and API efficiency.

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

Buyer's Guide

IBM Rational Test Workbench vs. Postman Enterprise

December 2025

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Helped 881,082 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

14th

Average Rating

7.6

Reviews Sentiment

7.3

Number of Reviews

Ranking in other categories

Performance Testing Tools (18th), Test Automation Tools (31st)

Postman Enterprise

Ranking in API Testing Tools

1st

Average Rating

8.2

Reviews Sentiment

6.8

Number of Reviews

Ranking in other categories

API Management (8th), API Monitoring Software (1st), AI Software Development (6th)

Mindshare comparison

As of January 2026, in the API Testing Tools category, the mindshare of IBM Rational Test Workbench is 1.8%, up from 0.4% compared to the previous year. The mindshare of Postman Enterprise is 9.8%, down from 13.2% compared to the previous year. It is calculated based on PeerSpot user engagement data.

API Testing Tools Market Share Distribution
Product	Market Share (%)
Postman Enterprise	9.8%
IBM Rational Test Workbench	1.8%
Other	88.4%

API Testing Tools

Featured Reviews

reviewer1513668

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.

Read full review

TOMISLAV SOKAC

API Integration Engineer at Airbnb

Automated testing optimizes API workflow and collaboration

Since I am using the free tier, one improvement would be to increase the number of requests you can send in a short time period. Currently, if I send 200-300 requests in a short period, Postman Enterprise requires a 30-second wait before sending another bundle of requests unless you upgrade to a higher tier. Secondly, Postman Enterprise sometimes takes several minutes to load the whole workspace. With 2,000-3,000 requests in a workspace, it can take a minute or two to load all requests. When creating a new workspace and moving requests between workspaces, depending on internet speed, it can take a longer period to copy those requests or workspace from one place to another.

Read full review

Quotes from Members

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

Pros

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

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

"The API testing features are valuable."

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

"The most valuable features of the solution are that it is easy to use and user-friendly."

"It is a very stable solution."

"Overall rating: Ten out of ten."

"One of the most valuable aspects of Postman is scalability. We can scale the collection and for the multiple repositories of the collections."

"Postman is very user-friendly and accessible even for those with minimal experience."

"Simple to use and you can easily store your projects."

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."

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

"If there is any way to have a record and playback feature through UI, as we do in Selenium and IDEs such as Eclipse, it would be great."

"Postman quality assurance could improve when doing tests."

"I have display issues in my Windows that need to be fixed."

"Initially, the setup is a little bit complex"

"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."

"Postman is a bit more of a complex tool, making it an area where improvements can be made."

"The tool needs to have a reporting feature."

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."

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

"We do not pay any money for Postman."

"The solution's price is reasonable."

"Postman is a free service."

"The solution has moderate pricing."

"We are currently using the free version, but we have plans to buy a license."

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

"The solution is open-source and free."

More Postman Enterprise pricing and cost advice

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Top Industries

By visitors reading reviews

Financial Services Firm

31%

Manufacturing Company

13%

Non Profit

University

Financial Services Firm

19%

Computer Software Company

14%

Insurance Company

Manufacturing Company

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

No data available

By reviewers
Company Size	Count
Small Business	17
Midsize Enterprise	9
Large Enterprise	41

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 12% of the time

Perfecto vs IBM Rational Test Workbench

Compared 11% of the time

Tricentis Tosca vs IBM Rational Test Workbench

Compared 9% of the time

Katalon Studio vs IBM Rational Test Workbench

Compared 9% of the time

ReadyAPI Test vs IBM Rational Test Workbench

Compared 8% of the time

More IBM Rational Test Workbench Competitors

Katalon Studio vs Postman Enterprise

Compared 11% of the time

ReadyAPI Test vs Postman Enterprise

Compared 10% of the time

Tricentis Tosca vs Postman Enterprise

Compared 10% of the time

Apache JMeter vs Postman Enterprise

Compared 8% of the time

Parasoft SOAtest vs Postman Enterprise

Compared 6% of the time

Product Reports

Buyer's Guide

Performance Testing Tools

January 2026

Download IBM Rational Test Workbench product report

Buyer's Guide

Postman Enterprise

January 2026

Download Postman Enterprise 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 Enterprise provides API testing capabilities with features like automation, integration, and shared environments, enhancing efficiency for REST and SOAP APIs. Teams benefit from its intuitive interface and support for automation and scripting.

Postman Enterprise is designed for API testing, supporting REST and SOAP APIs to enhance manual and automated testing. It offers endpoint validation, unit and integration testing, and data-driven testing. This platform is valued for its easy setup, flexibility in automation, and scripting, enabling collaborations through shared collections and generating reports. However, users find room for improvement in automation, integration with platforms, SOAP API testing, and collection management.

What are the key features of Postman Enterprise?

Intuitive Interface: Simplifies navigation and usage across teams.
Automation Capabilities: Speeds up testing processes.
Integration Support: Connects with tools like Jenkins and Newman.
Scripting and Version Control: Enhances collaboration.
Testing Flexibility: Supports REST and SOAP API testing.

What benefits can users expect from Postman Enterprise?

Efficiency Gains: Streamlines API testing processes.
Improved Collaboration: Facilitates teamwork through shared environments.
Better Testing Accuracy: Validates requests and responses thoroughly.

In industries relying on API development, Postman Enterprise aids in creating robust testing environments. Whether technology, finance, or healthcare, teams leverage its data-driven testing capability and collaboration features for comprehensive and accurate testing outcomes.

Postman

Sample Customers

Financial Insurance Management Corp.

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

Buyer's Guide

IBM Rational Test Workbench vs. Postman Enterprise

December 2025

Free Report: IBM Rational Test Workbench vs. Postman Enterprise

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