No more typing reviews! Try our Samantha, our new voice AI agent.

IBM Rational Test Workbench vs mabl comparison

Why PeerSpot?
 

Comparison Buyer's Guide

Executive Summary

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)
mabl
Ranking in API Testing Tools
14th
Ranking in Test Automation Tools
29th
Average Rating
0.0
Number of Reviews
0
Ranking in other categories
Functional Testing Tools (36th), Regression Testing Tools (18th)
 

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 mabl is 2.3%, up from 0.8% compared to the previous year. It is calculated based on PeerSpot user engagement data.
API Testing Tools Mindshare Distribution
ProductMindshare (%)
mabl2.3%
IBM Rational Test Workbench3.3%
Other94.4%
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.
report
Use our free recommendation engine to learn which API Testing Tools solutions are best for your needs.
920,336 professionals have used our research since 2012.
 

Top Industries

By visitors reading reviews
Construction Company
19%
Financial Services Firm
19%
Outsourcing Company
12%
Manufacturing Company
9%
Financial Services Firm
13%
Insurance Company
13%
Comms Service Provider
10%
Outsourcing Company
8%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
No data available
No data available
 

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.
Barracuda Networks, Priceline.com, JetBlue, Lending Club, Panasonic, Delta Dental
Find out what your peers are saying about Postman, OpenText, Worksoft and others in API Testing Tools. Updated: October 2026.
920,336 professionals have used our research since 2012.