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IBM Integration Bus vs WSO2 Enterprise Integrator comparison

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Comparison Buyer's Guide

Executive SummaryUpdated on Mar 3, 2025

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 Integration Bus
Ranking in Enterprise Service Bus (ESB)
2nd
Average Rating
8.0
Reviews Sentiment
7.2
Number of Reviews
70
Ranking in other categories
No ranking in other categories
WSO2 Enterprise Integrator
Ranking in Enterprise Service Bus (ESB)
6th
Average Rating
7.6
Reviews Sentiment
6.8
Number of Reviews
20
Ranking in other categories
Data Integration (31st)
 

Mindshare comparison

As of November 2026, in the Enterprise Service Bus (ESB) category, the mindshare of IBM Integration Bus is 16.2%, down from 19.3% compared to the previous year. The mindshare of WSO2 Enterprise Integrator is 4.9%, down from 5.7% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Enterprise Service Bus (ESB) Mindshare Distribution
ProductMindshare (%)
IBM Integration Bus16.2%
WSO2 Enterprise Integrator4.9%
Other78.9%
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.
AC
Technical director at Cremete
Effective data transformation and integration in complex environments with high functionality
Something that could be improved in WSO2 Enterprise Integrator is that the problem is not a lack of capability or functionalities. The problem is that it is a very complex environment. To put your hand on this environment is a very demanding task. This is the real problem. The problem is not about the product, but about the complexity to manage, to configure, to decide what to do. I have some experience using SAP R/3. It seems to me something similar. When you have to configure a situation with a client, especially for a client not in an industrial sector, but in a service sector, it is quite usual that you are in trouble for some reason. This is always the story that I found in the implementations I have done. Maybe there are only three or four big problems, in some other cases there are more than that, but this is the situation usually. For WSO2 Enterprise Integrator, not the same, but I must say it is quite often there is a need to put together some pieces and make it work in a coordinated way.

Quotes from Members

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

Pros

"This solution is very reliable and it is easy to learn."
"It makes the communication between multiple and heterogeneous applications so easy. We can bring together different messages and applications from different platforms and connect them through IBM Integration Bus."
"It allows us to avoid the need for consumers to understand multiple API protocols and security arrangements, and in some circumstances can reduce the impact of systems being unavailable."
"The most valuable feature is that it is clear and easy to learn."
"Easy to understand documentation with a huge list of examples and tutorials."
"The most valuable feature is that it's robust and its time to market is very short."
"IBM Integration Bus's best feature is integration."
"It is a stable solution."
"The built-in connectors help with quick connectivity to the platforms, and we are using this for both our banking and insurance clients."
"The solution's technical support is very knowledgeable."
"The productivity is the most valuable feature. It is very easy to write remediations."
"While I am still exploring the solution, I've so far been pretty satisfied with it."
"It's a very complete product. It allows us to network security and add more layers of security to the system."
"WSO2's analytics capability is good, considering the ELC support they provide."
"It was mostly easy to set up the product."
"The installation process is easy."
 

Cons

"There is room for improvement in providing more specific error messages and error criteria."
"They should add connectors to banking applications and other specific industries."
"Some of the runtime properties need to be improved because if you want to load certificates as sales security, you have to restart the server."
"In terms of improvement, the UI should be more user-friendly."
"I contacted technical support, but I wasn't able to get the correct answer. I feel I wasn't given a good response."
"It provides all the features that are required for day-to-day work. So far, I haven't seen any major issues that impact our work. I have been told that IBM App Connect Enterprise, which is the next version of IIB, is really good. It is better than IIB, and it gives you more coverage in terms of application integration."
"The solution needs instruction or guidance."
"The performance needs to be enhanced when working with the Toolkit."
"The product's price is an area of concern where improvements are required."
"WSO2 libraries are not mature enough. For example, if you want to integrate with Kafka using its Kafka library, it often has many bugs."
"The micro integrator should be improved. There is room for enhancement considering alternative integration components."
"The integration capabilities need to be improved."
"For simpler tasks or simpler use cases, we avoid using WSO2 Enterprise Integrator because it is quite complex."
"They should introduce better pricing for small companies."
"The configuration of the product is not an easy task for everyone."
"One of the reasons that we are looking for a replacement is their way of defining integration. The language of the XML structures that I use to describe the integrations are not that standard, and it's not easy to find people who are familiar with this approach."
 

Pricing and Cost Advice

"The pricing of the solution is high."
"The pricing could be improved to make it more competitive."
"IBM is expensive."
"It is not cheap. It has its cost. It is one of the high-cost solutions."
"Support costs are high compared to the competition. Otherwise, the support is good."
"IBM provides a quite complicated licensing model."
"The price of the IBM Integration Bus is expensive. If you compare the price to the cloud version you can purchase what you need but the on-premise version price is flat."
"As customers, we always try to buy things as cheaply as possible. But the price for the IBM Integration Bus is fine. When we compare it to competitors, it's pretty much the same. However, there are a lot of open-source integration platforms coming to the market as well. So overall, the price is fine as far as licensed products are concerned."
"The solution costs about 20,000 or 30,000 euros per year, per instance."
"It is a low-cost solution."
"The open-source, unsupported version is available free of charge."
"I rate the product price a six on a scale of one to ten, where one is low price and ten is high price."
"The cost is better than IBM Cloud Pak."
"The pricing of WSO2 Enterprise Integrator for enterprise subscriptions can be considered expensive, especially from the perspective of someone who prefers open-source software."
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Top Industries

By visitors reading reviews
Financial Services Firm
14%
Outsourcing Company
10%
Manufacturing Company
9%
Construction Company
7%
Outsourcing Company
14%
Financial Services Firm
8%
Construction Company
8%
Comms Service Provider
7%
 

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 Business8
Midsize Enterprise2
Large Enterprise11
 

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 is your experience regarding pricing and costs for IBM Integration Bus?
Regarding the pricing setup cost and licensing for IBM Integration Bus, I believe it is expensive. The IBM tool is now expensive because they moved to the cloud. I am not sure about the previous co...
What needs improvement with WSO2 Enterprise Integrator?
Something that could be improved in WSO2 Enterprise Integrator is that the problem is not a lack of capability or functionalities. The problem is that it is a very complex environment. To put your ...
What is your primary use case for WSO2 Enterprise Integrator?
A typical use case for WSO2 Enterprise Integrator is when I am in an interoperability environment with healthcare facilities and I have to put together a lot of applications that share some HL7 mes...
What advice do you have for others considering WSO2 Enterprise Integrator?
For simpler tasks or simpler use cases, we avoid using WSO2 Enterprise Integrator because it is quite complex. So it is easier to manage some more simple solutions than that. WSO2 Enterprise Integr...
 

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
West
Find out what your peers are saying about IBM Integration Bus vs. WSO2 Enterprise Integrator and other solutions. Updated: November 2026.
920,929 professionals have used our research since 2012.