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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

"There are three elements that make IBM Integration Bus very important for our organization's payroll systems which are the solution's high scalability, performance, and reliability."
"The product is usually very easy to deploy."
"The solution is stable and can scale relatively easily."
"The message queue feature is very valuable."
"I have found IBM Integration Bus is very useful because it can integrate multiple backend applications."
"It's stable across multiple platforms and across multiple applications."
"It is user-friendly and a value-added tool for banks and other verticals."
"IBM Integration Bus' most valuable features are its performance, fast and easy development, and easy support."
"It's a consolidated product. It works and it does its job pretty well."
"The installation process is easy."
"I like the user-friendly system and development of the service-oriented architecture."
"The solution's technical support is very knowledgeable."
"The productivity is the most valuable feature. It is very easy to write remediations."
"It's a very complete product. It allows us to network security and add more layers of security to the system."
"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 has two main parts: integration and transformation. It's very user-friendly and easy to understand for everyone."
 

Cons

"IBM Integration Bus can improve by implementing no-code or drag-and-drop adapters development, similar to what is available in Red Hat."
"Kafka is much faster. The performance is much greater than IIB. IIB is not as fast as Kafka."
"The tracing and debugging features are not up to date with more modern technology available."
"IBM Integration Bus could improve by having a more lightweight installation. Additionally, automation could improve."
"The user interface could be improved in a future release."
"The Toolkit itself is based on Eclipse and Java, and it does not respond sometimes."
"They should add connectors to banking applications and other specific industries."
"The IIB setup is still very command-based. The implementation is not so easy."
"The customization can be a bit difficult."
"I would like to see better documentation for the open-source version."
"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 product's price is an area of concern where improvements are required."
"In my opinion, the administration model and interface, of Carbon, are lacking in terms of its features and user experience."
"The server is very specific and it is very difficult to get experience with it."
"The setup can be difficult for those not familiar with the solution."
"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

"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."
"IBM is expensive."
"IBM provides a quite complicated licensing model."
"The pricing of the solution is high."
"IBM Integration Bus is expensive. There are cheaper products in the marketplace."
"Our licensing is based on a five-year contract, and as far as I know, there are no costs in addition to the standard licensing fee."
"The price is reasonable considering the features we receive."
"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."
"It is a low-cost solution."
"The solution costs about 20,000 or 30,000 euros per year, per instance."
"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."
"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."
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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
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 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.
920,769 professionals have used our research since 2012.