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IBM Integration Bus vs WSO2 Enterprise Integrator comparison

 

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)
7th
Average Rating
7.6
Reviews Sentiment
6.8
Number of Reviews
20
Ranking in other categories
Data Integration (29th)
 

Mindshare comparison

As of May 2026, in the Enterprise Service Bus (ESB) category, the mindshare of IBM Integration Bus is 15.4%, down from 22.0% compared to the previous year. The mindshare of WSO2 Enterprise Integrator is 6.1%, up from 5.2% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Enterprise Service Bus (ESB) Mindshare Distribution
ProductMindshare (%)
IBM Integration Bus15.4%
WSO2 Enterprise Integrator6.1%
Other78.5%
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

"It has the ability to be deployed without rewriting the code."
"The solution addresses all of our middleware needs in respect of transformation, parsing, security and stability; everything really."
"The most valuable feature is the security."
"The solution is very stable; we haven't found any bugs or glitches, there haven't been crashes, and it's quite reliable."
"The most valuable feature is the API integration."
"My favorite feature is the XML-based DFDL mapping, which is a tool that allows you to graphically map legacy data formats to modern data formats."
"The Cloud Pak for Integration is a useful feature."
"The most valuable thing is the loose coupling and making the change in only one stack of the ESB layer or the middleware layer."
"The stability is excellent."
"The solution has two main parts: integration and transformation. It's very user-friendly and easy to understand for everyone."
"It was mostly easy to set up the product."
"The most valuable aspect of the solution is the integration between core banking and other systems."
"The learning curve for this solution is very good."
"WSO2's analytics capability is good, considering the ELC support they provide."
"The solution's customer service is good."
"The drag-and-drop features for connectors are very valuable."
 

Cons

"The solution is too expensive for smaller companies."
"The price could be better. It would also be better if they simplified the code."
"I would not say that IBM Integration Bus is not a good product, I would point out that it is limited to its own infrastructure."
"Recently, there was a lot of instability when selecting the solution they needed for testing."
"The password settings need improvement."
"There is room for improvement in providing more specific error messages and error criteria."
"The monolithic architecture is an issue. Due to the fact that it's built on monolithic architecture, the solution is not very lightweight."
"I don't mind the pricing."
"WSO2 libraries are not mature enough. For example, if you want to integrate with Kafka using its Kafka library, it often has many bugs."
"I would like to see them bring back a feature, from earlier versions, that was very useful in debugging and finding issues."
"There are a lot of security settings that when you apply you have to re-apply again every time you modify a setting."
"The main issue with the product is pricing. It uses core-based pricing for WSO2 Enterprise Integrator and API Manager. It would be best if you had APIM by default. It provides many connectors for easy integration with third-party systems."
"We had some challenges with the installation of this solution."
"They should introduce better pricing for small companies."
"In my opinion, the administration model and interface, of Carbon, are lacking in terms of its features and user experience."
"I would like to see better documentation for the open-source version."
 

Pricing and Cost Advice

"Support costs are high compared to the competition. Otherwise, the support is good."
"It is a highly-priced solution."
"IBM Integration Bus is expensive."
"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."
"For small companies, First of all, there are a lot of free products that could be used for integration. It can use the cloud or new implementation in the past. But if the tool is IBM, the official box in your company, you can make your submission and also publish the cloud to the work file. But let’s say, if you are working with premises, then you have to buy a reasonable main full support and gain experience with your product."
"The price of this product could be lower."
"I generally do not get involved in the licensing or pricing because I'm a hardcore technical guy, but I'm aware of the fact that IBM is highly expensive, so not everybody can afford it. All the products are licensed."
"The solution requires a license and is very expensive here in India."
"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 open-source, unsupported version is available free of charge."
"The pricing of WSO2 Enterprise Integrator for enterprise subscriptions can be considered expensive, especially from the perspective of someone who prefers open-source software."
"The cost is better than IBM Cloud Pak."
"It is a low-cost solution."
"The solution costs about 20,000 or 30,000 euros per year, per instance."
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Top Industries

By visitors reading reviews
Financial Services Firm
18%
Manufacturing Company
8%
Computer Software Company
6%
Comms Service Provider
5%
Financial Services Firm
13%
Comms Service Provider
8%
Manufacturing Company
7%
Construction Company
6%
 

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: April 2026.
893,244 professionals have used our research since 2012.