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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)
7th
Average Rating
7.6
Reviews Sentiment
6.8
Number of Reviews
20
Ranking in other categories
Data Integration (28th)
 

Mindshare comparison

As of September 2026, in the Enterprise Service Bus (ESB) category, the mindshare of IBM Integration Bus is 16.2%, down from 21.0% compared to the previous year. The mindshare of WSO2 Enterprise Integrator is 5.2%, down from 5.6% 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 Integrator5.2%
Other78.6%
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

"IBM ACE is very well engineered and very stable."
"The message queue feature is very valuable."
"The product is a user-customized tool so that you can adjust it to your specific needs pretty well with little trouble."
"It can be implemented as an enterprise service bus to seamlessly connect all applications within your enterprise."
"IBM Integration Bus has a complete set of tools that are implemented between rules when it comes to run time, but it's not easy to understand."
"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."
"It has reduced the programming from one hundred percent down to ten or twenty percent."
"I consider the solution to be one of the most stable in the market, in comparison with others such as Oracle and this assessment I maintain on an ongoing basis."
"The installation process is easy."
"The learning curve for this solution is very good."
"The solution basically conforms to our standards."
"The connectors have been the most impactful features for handling integrations. I can use these connectors when I need specific connectivity with a third party, like a core banking system in BFSI. I don't need to do all the development. I take the specific connector, put in the IP address and password, and it takes care of everything."
"From the capabilities and functional possibility and anything else technical, it is a very well-done product, I have to say."
"The customer service executives are very responsive."
"The drag-and-drop features for connectors are very valuable."
"The solution's technical support is very knowledgeable."
 

Cons

"The product does not provide API management."
"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."
"We decided to move away from IBM Integration Bus for IT technical refreshments."
"This product uses the PVU (Processor Value Unit) license model from IBM, and it is something that should be improved."
"Current aggregation implementation should be deprecated. MQ independent, as well as an intuitive solution, should be proposed."
"Session management can sometimes hand forcing server reboots."
"IBM Integration Bus could improve by having a more lightweight installation. Additionally, automation could improve."
"In terms of improvement, the UI should be more user-friendly."
"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."
"In my opinion, the administration model and interface, of Carbon, are lacking in terms of its features and user experience."
"There are a lot of security settings that when you apply you have to re-apply again every time you modify a setting. It is something that really needs to be enhanced."
"The customization can be a bit difficult."
"The micro integrator should be improved. There is room for enhancement considering alternative integration components."
"The scalability is not strong. If you want to scale it you have to install multiple servers."
"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."
"I would like to see them bring back a feature, from earlier versions, that was very useful in debugging and finding issues."
 

Pricing and Cost Advice

"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."
"The pricing of the solution is high."
"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."
"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."
"Support costs are high compared to the competition. Otherwise, the support is good."
"The pricing could be improved to make it more competitive."
"The solution requires a license and is very expensive here in India."
"The solution costs about 20,000 or 30,000 euros per year, per instance."
"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."
"It is a low-cost solution."
"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."
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Top Industries

By visitors reading reviews
Financial Services Firm
15%
Outsourcing Company
10%
Manufacturing Company
8%
Comms Service Provider
7%
Outsourcing Company
14%
Financial Services Firm
10%
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
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Find out what your peers are saying about IBM Integration Bus vs. WSO2 Enterprise Integrator and other solutions. Updated: September 2026.
913,924 professionals have used our research since 2012.