OpenESB vs WSO2 Enterprise Integrator comparison

OpenESB and WSO2 are both solutions in the Enterprise Service Bus (ESB) category. OpenESB is ranked #13, while WSO2 is ranked #7 with an average rating of 8.0. OpenESB holds a 2.4% mindshare in E, compared to WSO2’s 5.9% mindshare. Additionally, 100% of OpenESB users are willing to recommend the solution, compared to 76% of WSO2 users who would recommend it.

OpenESB

Read 4 OpenESB reviews

416 Views
412 Comparison Views

100% willing to recommend

WSO2 Enterprise Integrator

Read 20 WSO2 Enterprise Integrator reviews

2,011 Views
724 Comparison Views

76% willing to recommend

OpenESB

WSO2 Enterprise Integrator

Comparison Buyer's Guide

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Executive SummaryUpdated on Mar 3, 2025

WSO2 Enterprise Integrator and OpenESB compete in the integration solutions domain. WSO2 Enterprise Integrator holds the upper hand with its advanced features and deployment support, while OpenESB offers a cost-effective solution due to its open-source nature.

Features: WSO2 Enterprise Integrator provides robust integration with multiple cloud-native instances, managed API support, and extensive capability for seamless integrations. OpenESB is valued for its simplicity, strong enterprise message processing, and significant integration functionalities.

Ease of Deployment and Customer Service: WSO2 Enterprise Integrator offers comprehensive deployment flexibility across various environments, coupled with strong customer support. OpenESB provides straightforward deployment processes but has lower customer service responsiveness.

Pricing and ROI: WSO2 Enterprise Integrator involves a higher initial cost, justified by its extensive features and long-term benefits. OpenESB, being open-source, involves lower setup costs, making it attractive to budget-conscious users seeking reasonable return on investment.

To learn more, read our detailed OpenESB vs. WSO2 Enterprise Integrator Report (Updated: December 2025).

Buyer's Guide

OpenESB vs. WSO2 Enterprise Integrator

December 2025

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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

OpenESB

Ranking in Enterprise Service Bus (ESB)

13th

Average Rating

8.6

Reviews Sentiment

7.2

Number of Reviews

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

Ranking in other categories

Data Integration (32nd)

Mindshare comparison

As of January 2026, in the Enterprise Service Bus (ESB) category, the mindshare of OpenESB is 2.4%, up from 1.3% compared to the previous year. The mindshare of WSO2 Enterprise Integrator is 5.9%, up from 4.7% compared to the previous year. It is calculated based on PeerSpot user engagement data.

Enterprise Service Bus (ESB) Market Share Distribution
Product	Market Share (%)
WSO2 Enterprise Integrator	5.9%
OpenESB	2.4%
Other	91.7%

Enterprise Service Bus (ESB)

Featured Reviews

PaulPerez

Integration Architect at Pymma consulting

Easily define choreography and orchestration with this process-oriented solution

We provide contracted services for our customers that include coordinating with providers and implementing the solution. A current project includes using the solution to deploy 200 microservices. The process-oriented solution allows you to define choreography and orchestration. This feature…

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Andrea Cuccarini

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.

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Quotes from Members

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

Pros

"OpenESB pushes the organization to clearly define service boundaries and interfaces. So it motives the business and the development teams to clearly define their business services and processes they want to implement. OpenESB supports fine and coarse-grain granularity for the services and supports top-down and bottom-up approaches for the services, processes definition, and composition."

"The core is very stable."

"One of the most valuable features is being able to implement business processes while keeping track of the design from BPMN to a BPEL Implementation."

"The process-oriented solution allows you to define choreography and orchestration."

"In my opinion, the most valuable aspect of this solution is its extensive range of adaptors and connectors. This feature holds significant importance and provides great value to users."

"The customer service executives are very responsive."

"The solution has two main parts: integration and transformation. It's very user-friendly and easy to understand for everyone."

"It's a consolidated product. It works and it does its job pretty well."

"The solution's technical support is very knowledgeable."

"I like the user-friendly system and development of the service-oriented architecture."

"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."

"The learning curve for this solution is very good."

More WSO2 Enterprise Integrator pros

Cons

"Regarding its management, a web console being able to synchronize distributed instances would be great."

"The documentation needs to be better."

"The documentation of the product must be improved. It could be tricky to find the right documentation on a topic since the documentation is spread in many places. I advise the new joiner to contact the community to get entry points and additional documentation. Tutorial and Video must be present to take up the product."

"Cloud deployment is weak and needs to be improved."

"The micro integrator should be improved. There is room for enhancement considering alternative integration components."

"If I have to buy software, then it becomes expensive for me."

"The integration capabilities need to be improved."

"The product's price is an area of concern where improvements are required."

"I would like to see them bring back a feature, from earlier versions, that was very useful in debugging and finding issues."

"In my opinion, the administration model and interface, of Carbon, are lacking in terms of its features and user experience."

"The customization can be a bit difficult."

"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."

More WSO2 Enterprise Integrator cons

Pricing and Cost Advice

"There are two versions. The first is the community version, which is free and contains the last part of the feature, but if you want to get the Enterprise version, you'll have to pay €60,000 which covers support and two instances on production."

"The cost for the prediction instrument is high because it is charged per instances based on prediction, but the rest of the solution is free."

"The Community Edition is a full product you can use in production, it does not have limitations like other alternatives."

"The pricing of WSO2 Enterprise Integrator for enterprise subscriptions can be considered expensive, especially from the perspective of someone who prefers open-source software."

"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 solution costs about 20,000 or 30,000 euros per year, per instance."

"It is a low-cost solution."

"The cost is better than IBM Cloud Pak."

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881,082 professionals have used our research since 2012.

Top Industries

By visitors reading reviews

No data available

Financial Services Firm

11%

Computer Software Company

Comms Service Provider

Insurance Company

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

No data available

By reviewers
Company Size	Count
Small Business	8
Midsize Enterprise	2
Large Enterprise	11

Questions from the Community

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What do you like most about WSO2 Enterprise Integrator?

WSO2's analytics capability is good, considering the ELC support they provide.

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What is your experience regarding pricing and costs for WSO2 Enterprise Integrator?

The product has reasonable and competitive pricing for enterprise customers. It is expensive for small businesses especially. They are using the open-source solution, and they find it expensive sin...

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What needs improvement with WSO2 Enterprise Integrator?

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Comparisons

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Compared 31% of the time

Aurea CX Messenger vs OpenESB

Compared 17% of the time

Oracle Service Bus vs OpenESB

Compared 15% of the time

IBM WebSphere Message Broker vs OpenESB

Compared 15% of the time

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Mule ESB vs WSO2 Enterprise Integrator

Compared 10% of the time

IBM Integration Bus vs WSO2 Enterprise Integrator

Compared 10% of the time

MuleSoft Anypoint Platform vs WSO2 Enterprise Integrator

Compared 7% of the time

Azure Data Factory vs WSO2 Enterprise Integrator

Compared 6% of the time

Oracle Service Bus vs WSO2 Enterprise Integrator

Compared 5% of the time

More WSO2 Enterprise Integrator Competitors

Product Reports

Buyer's Guide

OpenESB

January 2026

Download OpenESB product report

Buyer's Guide

WSO2 Enterprise Integrator

January 2026

Download WSO2 Enterprise Integrator product report

Overview

OpenESB is a Java-based open-source enterprise service bus. It can be used as a platform for both enterprise application integration and service-oriented architecture. OpenESB allows you to integrate legacy systems, external and internal partners and new development in your Business Process.

OpenESB

WSO2 Enterprise Integrator, core to the WSO2 Integration Agile Platform, is an open source Integration product for cloud native and container-native projects. It enables enterprise integration experts to build, scale, and secure sophisticated integration solutions to achieve digital agility. Unlike other integration products, WSO2 Enterprise Integrator already contains integration runtimes, message brokering, business process modeling, analytics and visual tooling capabilities.

WSO2

Sample Customers

Information Not Available

West

Buyer's Guide

OpenESB vs. WSO2 Enterprise Integrator

December 2025

Free Report: OpenESB vs. WSO2 Enterprise Integrator

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