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IBM Integration Bus vs Mule ESB comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Nov 2, 2025

Review summaries and opinions

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

ROI

Sentiment score
6.3
IBM Integration Bus offers varied ROI, aiding digital transformation, with long-term benefits and cost reductions from efficient integrations.
Sentiment score
5.4
Calculating Mule ESB ROI is challenging, but users report positive returns from licensing, reusability, and microservices efforts.
 

Customer Service

Sentiment score
6.6
IBM Integration Bus customer service is rated high for expertise, though some users cite delays and high costs.
Sentiment score
6.3
Mule ESB's support is generally positive but varies by subscription level; users note inconsistencies and prefer external help sometimes.
I would rate the technical support of IBM Integration Bus as nine out of ten; it was the best.
Associate Consultant at MindCraft Software Pvt. Ltd.
We have a good relationship with our vendor, and they are ready to help us with any technical issues.
Solutions Architect at Metrobank
The technical support of Mule ESB can be rated from nine to ten.
Senior Specialist at a manufacturing company with 10,001+ employees
The technical support from Salesforce is moderate.
Enterprise integrator at a tech vendor with 10,001+ employees
 

Scalability Issues

Sentiment score
7.7
IBM Integration Bus excels in scalability, supporting diverse configurations and high performance, ideal for enterprise deployment with minor version limitations.
Sentiment score
7.5
Mule ESB offers adaptable scalability and performance, ideal for diverse businesses with cloud deployments and large data volumes.
The adaptability of Mule ESB in supporting multiple messaging patterns is pretty decent and pretty good.
Principal Architect at a manufacturing company with 10,001+ employees
When it comes to scalability and the ability to expand, I would rate Mule ESB as an eight or nine.
Enterprise integrator at a tech vendor with 10,001+ employees
Mule ESB is a scalable solution.
Senior Specialist at a manufacturing company with 10,001+ employees
 

Stability Issues

Sentiment score
8.2
IBM Integration Bus is praised for its exceptional stability and reliability, crucial for handling extensive infrastructure integration smoothly.
Sentiment score
7.1
Mule ESB is stable with minor glitches; improvements and proper management enhance reliability, scoring 8-9 out of 10.
In my experience, it is a scalable solution, and IBM Integration Bus is indeed a stable product.
Associate Consultant at MindCraft Software Pvt. Ltd.
Mule ESB is a stable product, and I have no doubts about its reliability.
Enterprise integrator at a tech vendor with 10,001+ employees
 

Room For Improvement

IBM Integration Bus needs enhancements in functionality, support, cost, interface, architecture, and integration with cloud and DevOps.
Mule ESB requires user-friendly documentation, enhanced stability, better performance, scalability, exception handling, and improved analytics for broader adaptability.
They are improving one of the nodes such as the HTTP request node, implementing the indirect retry mechanism itself, and we are getting new features.
Associate Consultant at MindCraft Software Pvt. Ltd.
Points for improvement in Mule ESB definitely include enhancing the analytics capabilities because currently, they rely on external logging tools such as Splunk or ELK, which is lagging behind compared to other tools such as Workato that offer more analytical features.
Enterprise integrator at a tech vendor with 10,001+ employees
More information is needed from MuleSoft.
Senior Specialist at a manufacturing company with 10,001+ employees
Pricing is one factor that could be improved about Mule ESB; other than that, I'm pretty fine with it.
Principal Architect at a manufacturing company with 10,001+ employees
 

Setup Cost

IBM Integration Bus is costly for small firms but reasonable for large enterprises, with concerns over licensing complexity.
Mule ESB's cost and flexible licensing appeal to enterprises, yet high fees lead smaller businesses to explore alternatives.
Regarding the pricing setup cost and licensing for IBM Integration Bus, I believe it is expensive.
Associate Consultant at MindCraft Software Pvt. Ltd.
 

Valuable Features

IBM Integration Bus excels with protocol support, scalability, and security, offering seamless system integration and intuitive GUI for enterprises.
Mule ESB provides flexible, robust integrations with extensive connectors, data transformation, and API management, supported by cloud options and community.
The features I find most valuable in IBM Integration Bus are very useful for performing transformations from systems such as SAP to Salesforce, and from Salesforce to S/4 and 365.
Associate Consultant at MindCraft Software Pvt. Ltd.
They have their own language called DataWeave, which helps transform data and is efficient enough to handle any kind of transformation.
Senior Specialist at a manufacturing company with 10,001+ employees
It is also reusable, meaning the same service can be used in multiple places simply by adding it, and this comes with the API-led architecture that makes integrations more secure and reliable.
Enterprise integrator at a tech vendor with 10,001+ employees
The best features of Mule ESB are that it's very robust and solid; I find that even our legacy systems go well with ESB.
Solutions Architect at Metrobank
 

Categories and Ranking

IBM Integration Bus
Ranking in Enterprise Service Bus (ESB)
1st
Average Rating
8.0
Reviews Sentiment
7.2
Number of Reviews
70
Ranking in other categories
No ranking in other categories
Mule ESB
Ranking in Enterprise Service Bus (ESB)
2nd
Average Rating
8.2
Reviews Sentiment
5.7
Number of Reviews
54
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of January 2026, in the Enterprise Service Bus (ESB) category, the mindshare of IBM Integration Bus is 16.6%, down from 22.9% compared to the previous year. The mindshare of Mule ESB is 15.0%, down from 21.6% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Enterprise Service Bus (ESB) Market Share Distribution
ProductMarket Share (%)
IBM Integration Bus16.6%
Mule ESB15.0%
Other68.4%
Enterprise Service Bus (ESB)
 

Featured Reviews

RA
Associate Consultant at MindCraft Software Pvt. Ltd.
Efficient data transformation and seamless integration drive successful deployments
As for improvements in IBM Integration Bus, we are getting another feature of the retry mechanism now. Version 8.13 was upgraded, and we started using the retry mechanism itself, and we are using nodes in the development level. They are improving one of the nodes such as the HTTP request node, implementing the indirect retry mechanism itself, and we are getting new features.
Srinivas-Kanduri - PeerSpot reviewer
Enterprise integrator at a tech vendor with 10,001+ employees
Integration architecture has enabled reliable multi-channel messaging and secure API management but now needs better analytics and simpler development
In my opinion, the real-time analytics part of Mule ESB is not up to the mark for the decision-making process. While there are some analytics features, they lack the standards needed for enterprise use. Compared to other analytics tools such as Power BI, MuleSoft falls short.Points for improvement in Mule ESB definitely include enhancing the analytics capabilities because currently, they rely on external logging tools such as Splunk or ELK, which is lagging behind compared to other tools such as Workato that offer more analytical features. Additionally, issues arise with AI-based use cases due to dependencies on Salesforce tools such as agent force, making development more complicated when it should be more independent. Developing AI-based agents without being tied to Salesforce applications could also enhance functionality.
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Top Industries

By visitors reading reviews
Financial Services Firm
20%
Computer Software Company
11%
Manufacturing Company
8%
Insurance Company
7%
Computer Software Company
16%
Financial Services Firm
14%
Manufacturing Company
12%
Comms Service Provider
8%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business15
Midsize Enterprise17
Large Enterprise47
By reviewers
Company SizeCount
Small Business23
Midsize Enterprise6
Large Enterprise38
 

Questions from the Community

Migration from IBM Integration Bus to Mulesoft ESB for a large enterprise tech services company
I was previously part of the Oracle SOA/OSB development team. In my current capacity I architected solutions using MuleSoft Anypoint Platform on cloud / on-premises and hybrid modes and on PCE/RTF ...
IBM Integration Bus vs Mule ESB - which to choose?
Our team ran a comparison of IBM’s Integration Bus vs. Mule ESB in order to determine what sort of ESB software was the best fit for our organization. Ultimately we decided to choose IBM Integratio...
What do you like most about IBM Integration Bus?
The message queue, like, message queue connectors. Then they have a built in connectors for most of the systems, like SAP, oracle database, and this Civil connector is there. Of course, we have thi...
What do you like most about Mule ESB?
The solution's drag-and-drop interface and data viewer helped us quite a lot.
What is your experience regarding pricing and costs for Mule ESB?
In terms of costing, I consider it 50-50; I would not say it's 100% cost-effective because the platform itself is a little costly. We are trying to improve how efficiently we make our ecosystem. It...
What needs improvement with Mule ESB?
In my opinion, the real-time analytics part of Mule ESB is not up to the mark for the decision-making process. While there are some analytics features, they lack the standards needed for enterprise...
 

Also Known As

IBM WebSphere ESB
No data available
 

Overview

 

Sample Customers

Salesbox, €sterreichische Bundesbahnen (€BB), Road Buddy, Swiss Federal Railways, Electricity Supply Board, The Hartree Centre, ESB Networks
Ube, PacificComp, University of Witwatersrand, Justice Systems, Camelot
Find out what your peers are saying about IBM Integration Bus vs. Mule ESB and other solutions. Updated: December 2025.
879,422 professionals have used our research since 2012.