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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 (28th)
 

Mindshare comparison

As of August 2026, in the Enterprise Service Bus (ESB) category, the mindshare of IBM Integration Bus is 16.1%, down from 21.8% compared to the previous year. The mindshare of WSO2 Enterprise Integrator is 5.3%, down from 5.4% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Enterprise Service Bus (ESB) Mindshare Distribution
ProductMindshare (%)
IBM Integration Bus16.1%
WSO2 Enterprise Integrator5.3%
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

"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 this SQL database connector So those built in connectors are there. For the almost most of the systems, we have built in connectors. And second thing is that it is a stateless Integration, so it doesn't maintain a state of the integration. Bus the Stitches Integration makes it very fast."
"Yes IIB help us to shape up our organization in service oriented architecture."
"The solution has a variety of valuable features: the ESB characteristics are great, the transformation, protocol bridging and routing are great, the list of features on offer are both useful and actionable, and the cost is pretty cheap compared to what else is available in the market."
"The stability is mostly pretty good."
"Content is easily infiltrated in the eclipse infrastructure."
"Before we implemented IBM to integrate with other external parties, we had buckets of applications to build, and maintenance was difficult, as was support, but right now, post-implementation of IBM ESB, we have a better structure, better teams in development and response to customers, and an application that is centrally managed and monitored."
"Web interface, REST API for viewing services, admin, stats, and deployment are premium features, which makes IIB stand among its competition."
"The solution is very stable; we haven't found any bugs or glitches, there haven't been crashes, and it's quite reliable."
"It has improved our time management because development is quicker."
"The stability is excellent."
"The productivity is the most valuable feature. It is very easy to write remediations."
"The solution's customer service is good."
"I like the user-friendly system and development of the service-oriented architecture."
"The solution basically conforms to our standards."
"The learning curve for this solution is very good."
"The customer service executives are very responsive."
 

Cons

"The solution needs to simplify its documentation, such as the user and operation manuals, to make them even easier to understand."
"The cloud deployment of the IBM Integration Bus should be made easier."
"I would like to be able to run and install this solution on different platforms and using containers and using modern micro-service and cloud environments."
"Kafka is much faster. The performance is much greater than IIB. IIB is not as fast as Kafka."
"Recently, there was a lot of instability when selecting the solution they needed for testing."
"Licensing is too high. It is quite expensive."
"I don't mind the pricing."
"The technical support for this product is not very good."
"The configuration of the product is not an easy task for everyone."
"The integration capabilities need to be improved."
"The setup can be difficult for those not familiar with the solution."
"If I have to buy software, then it becomes expensive for me."
"Most of the issues we run into with the WSO2 Enterprise Integrator deal with customizations."
"I would like to see better documentation for the open-source version."
"They should release upgrades more frequently."
"WSO2 libraries are not mature enough. For example, if you want to integrate with Kafka using its Kafka library, it often has many bugs."
 

Pricing and Cost Advice

"IBM Integration Bus is expensive. There are cheaper products in the marketplace."
"The pricing of the solution is high."
"IBM provides a quite complicated licensing model."
"IBM Integration Bus solution is expensive and this is one of the reasons we are looking for an alternative, such as MuleSoft."
"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 maintenance and support of the product are very expensive."
"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 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 solution costs about 20,000 or 30,000 euros per year, per instance."
"It is a low-cost solution."
"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 open-source, unsupported version is available free of charge."
"The cost is better than IBM Cloud Pak."
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Top Industries

By visitors reading reviews
Financial Services Firm
16%
Outsourcing Company
8%
Manufacturing Company
8%
Construction Company
6%
Outsourcing Company
11%
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
West
Find out what your peers are saying about IBM Integration Bus vs. WSO2 Enterprise Integrator and other solutions. Updated: August 2026.
911,436 professionals have used our research since 2012.