Mule ESB vs WSO2 Enterprise Integrator vs webMethods.io comparison

Salesforce and IBM are both solutions in the Enterprise Service Bus (ESB) category. Salesforce is ranked #1 with an average rating of 8.3, while IBM is ranked #3 with an average rating of 8.2. Salesforce holds a 17.0% mindshare in E, compared to IBM’s 8.6% mindshare. Additionally, 87% of Salesforce users are willing to recommend the solution, compared to 94% of IBM users who would recommend it.

Mule ESB

Read 54 Mule ESB reviews

3,930 Views
3,026 Comparison Views

87% willing to recommend

webMethods.io

Read 94 webMethods.io reviews

9,450 Views
1,418 Comparison Views

94% willing to recommend

WSO2 Enterprise Integrator

Read 20 WSO2 Enterprise Integrator reviews

2,594 Views
882 Comparison Views

76% willing to recommend

Mule ESB

webMethods.io

WSO2 Enterprise Integrator

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Executive Summary

We performed a comparison between Mule ESB, WSO2 Enterprise Integrator, and webMethods.io based on real PeerSpot user reviews.

Find out what your peers are saying about Salesforce, IBM, Oracle and others in Enterprise Service Bus (ESB).

To learn more, read our detailed Enterprise Service Bus (ESB) Report (Updated: March 2026).

Buyer's Guide

Enterprise Service Bus (ESB)

March 2026

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Helped 885,444 peers since 2012

Review summaries and opinions

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

Mindshare comparison

As of April 2026, in the Enterprise Service Bus (ESB) category, the mindshare of Mule ESB is 17.0%, down from 21.0% compared to the previous year. The mindshare of webMethods.io is 8.6%, down from 10.5% compared to the previous year. The mindshare of WSO2 Enterprise Integrator is 6.6%, up from 4.9% compared to the previous year. It is calculated based on PeerSpot user engagement data.

Enterprise Service Bus (ESB) Mindshare Distribution
Product	Mindshare (%)
Mule ESB	17.0%
webMethods.io	8.6%
WSO2 Enterprise Integrator	6.6%
Other	67.8%

Enterprise Service Bus (ESB)

Featured Reviews

Srinivas-Kanduri

Enterprise integrator at a tech vendor with 10,001+ employees

Integration architecture has enabled reliable multi-channel messaging and secure API management but now needs better analytics and simpler development

In my opinion, the real-time analytics part of Mule ESB is not up to the mark for the decision-making process. While there are some analytics features, they lack the standards needed for enterprise use. Compared to other analytics tools such as Power BI, MuleSoft falls short.Points for improvement in Mule ESB definitely include enhancing the analytics capabilities because currently, they rely on external logging tools such as Splunk or ELK, which is lagging behind compared to other tools such as Workato that offer more analytical features. Additionally, issues arise with AI-based use cases due to dependencies on Salesforce tools such as agent force, making development more complicated when it should be more independent. Developing AI-based agents without being tied to Salesforce applications could also enhance functionality.

Read full review

Yashraj Makwana

Developer at a hospitality company with 1,001-5,000 employees

Offers strong integration capabilities and reliable features but needs pricing and scaling improvements

Many things are evolving with the AI buzz in the market. What I would like to see improved or enhanced in webMethods.io in the future is that since webMethods.io is already under IBM, I think IBM will introduce and integrate AI into it. Additionally, regarding what webMethods.io can improve is the license cost. Other cloud players are also providing the same kind of functionality, such as AWS and Azure. webMethods.io is being installed on-premises, but AWS is providing it directly in the cloud. When comparing the license cost and request per minute cost, webMethods.io needs to address that. There are many competitors in the market for this.

Read full review

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.

Read full review

Quotes from Members

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

Pros

"It is an ESB that can deploy seamlessly on-premises and in the cloud with strong API management and governance and has a strong integration with open source products like JBPM and Drools if these features are part of your requirements."

"It is the best integration platform for those who are looking to implement or are going for API-based architecture and microservices-based architecture."

"It was pretty fast to develop APIs on this platform, which is something I liked about it. So, the time to value was pretty good."

"Mule ESB helps a lot with our microservice architecture that we're trying to build, and it is still our go-to technology when it comes to that, so it's very promising for us."

"It’s a pretty good tool to have when you try to go with a microservices type of an architecture where you want to decouple your systems and where you want all the systems to talk to each other, share that knowledge, and create those experiences that you want as part of your digital transformation journey."

"The solution's drag-and-drop interface and data viewer helped us quite a lot."

"It is one of the best integration tools in the market."

"We suggested that clients switch to Mule ESB due to the lower licensing cost, the availability of cloud connectors, the CloudHub platform supporting iPaaS, and a suite of 110+ connectors to use."

More Mule ESB pros

"The most valuable feature is stability."

"Segregation of deployment for the environments is the most valuable feature of the solution."

"The most valuable feature of webMethods Integration Server is all the capabilities it provides. We leverage most of the features, that they have offered to us. Our vendor has made some additional features on top of the webMethods Integration Server and we use all the features together."

"The solution's ease-of-use is its most valuable feature, in which complex issues may be resolved."

"By selecting Software AG and using multiple products, this saved us about 72 percent, which has definitely given us more agility."

"It's a visual tool, so our transformations can be quickly implemented without a lot of fuss. The fact that we have an easy way to expose REST services is also very interesting. It offers the possibility to connect over GMS to synchronize message brokers."

"Based on the solution's usability and ease of use it is very good."

"While I have yet to calculate a return on investment, I have definitely seen one, and owing to the number of users, I would say that it is huge."

More webMethods.io pros

"The customer service executives are very responsive."

"Currently, I find the configuration part quite valuable, where you can easily configure things."

"The drag-and-drop features for connectors are very valuable."

"The solution's customer service is good."

"The installation process is easy."

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

"It has improved our time management because development is quicker."

"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."

More WSO2 Enterprise Integrator pros

Cons

"The initial setup could be more straightforward."

"The current version will not be supported for much longer."

"The initial setup is not easy."

"It is getting expensive and I recommend clients to use Camel ESB if enterprise support is not required."

"The documentation is not extensive and is limited to examples which are too basic."

"There are limitations with the subscription model that comes with the product."

"I cannot say that installation with Kubernetes needs to be improved to be less tricky, but more information is needed from MuleSoft. They do not help much with Kubernetes, so we should have a person who is well-versed in Kubernetes to handle this."

"The solution isn't as stable as we'd like it to be. There are some ongoing issues and therefore Mule has to provide frequent patches."

More Mule ESB cons

"The solution should include REST API calls."

"Documentation needs tuning. There is a lot of dependency with SoftwareAG."

"I have noticed that webMethods ActiveTransfer has had problems when handling large files. For example, when we receive (and perform operations on) files that are larger than about 16 MB, the software starts losing performance."

"On the monitoring side of things, the UI for monitoring could be improved. It's a bit cumbersome to work with."

"The support is good but they could improve by being faster and more knowledgeable."

"Pricing is the number-one downfall. It's too expensive."

"Regarding the stateful session inbound to ESB (Integration Server), it seems that the stateful session sometimes doesn't die out when the transaction is finished, but waits until the timeout expires (although quite often it doesn't even die after the timeout expires, which eventually would flood the server)."

"The stability of the various modules of the product suite have been a bit of a concern lately. Though their support team is always easy to reach out to, I would prefer it not come to that."

More webMethods.io cons

"The integration capabilities need to be improved."

"The server is very specific and it is very difficult to get experience with it."

"There are a lot of security settings that when you apply you have to re-apply again every time you modify a setting."

"We had some challenges with the installation of this solution."

"The configuration of the product is not an easy task for everyone."

"The customization can be a bit difficult."

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

"The scalability is not strong. If you want to scale it you have to install multiple servers."

More WSO2 Enterprise Integrator cons

Pricing and Cost Advice

"You will not get any support from Mule ESB's team for the tool's community edition...You can get support with the licensed version of Mule ESB."

"This product is cheaper than some offered by other vendors, although there is a problem because you have to pay for some third-party adapters."

"Mule ESB is a costly solution. We pay approximately $80,000 annually for the system. The cost of the number of instances, annual subscription, and cloud hosting services are expensive."

"The licensing is yearly, and there are additional fees for services."

"Plan your licensing model (cloud or on-premises or hybrid) that will allow seamless integration with new partners."

"Most of the challenges that I had with this solution were for smaller customers. There is not a good licensing model or pricing model. It is more expensive than other solutions, and that's the downside of MuleSoft. I had to be creative to be able to sell it to the business, but we did. This is something they have to work on because for large companies, it's affordable, but for small and medium businesses, it's very hard to sell."

"The solution is expensive."

"Mule ESB is an expensive solution."

More Mule ESB pricing and cost advice

"I am not involved in the licensing side of things."

"Most of my clients would like the price of the solution to be reduced."

"The price is high and I give it a five out of ten."

"It is worth the cost."

"There are no hidden costs in addition to the standard licensing fees for webMethods. For corporate organizations, it's a very cheap or fairly priced product, but for growing or small businesses, it's quite expensive. These businesses would probably need to consider an enterprise services bus at some point. Thus, from a pricing point, it closes out non-cooperate businesses."

"Based on our team discussions and feedback, it is pretty costly because they charge us for each transmission."

"The price is a little bit high, especially regarding their support."

"Always plan five years ahead and don’t jeopardize the quality of your project by dropping items from the bill of materials."

More webMethods.io pricing and cost advice

"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."

"It is a low-cost solution."

"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."

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Top Industries

By visitors reading reviews

Financial Services Firm

14%

Manufacturing Company

10%

Computer Software Company

10%

Comms Service Provider

Manufacturing Company

13%

Financial Services Firm

11%

Computer Software Company

Energy/Utilities Company

No data available

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

By reviewers
Company Size	Count
Small Business	23
Midsize Enterprise	6
Large Enterprise	38

By reviewers
Company Size	Count
Small Business	23
Midsize Enterprise	11
Large Enterprise	64

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

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 Mu...

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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 t...

See all answers

What is your experience regarding pricing and costs for Mule ESB?

In terms of costing, I consider it 50-50; I would not say it's 100% cost-effective because the platform itself is a l...

See all answers

What needs improvement with webMethods Integration Server?

The alignment of on-premise and cloud versions needs improvement.

See all answers

What needs improvement with webMethods Trading Networks?

Many things are evolving with the AI buzz in the market. What I would like to see improved or enhanced in webMethods....

See all answers

What is your primary use case for webMethods Trading Networks?

I use webMethods.io primarily for the integration of APIs. Could you please describe a few use cases for it?

See all answers

What do you like most about WSO2 Enterprise Integrator?

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

See all answers

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 esp...

See all answers

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 fun...

See all answers

Comparisons

IBM Integration Bus vs Mule ESB

Compared 31% of the time

Oracle Service Bus vs Mule ESB

Compared 6% of the time

Red Hat Fuse vs Mule ESB

Compared 5% of the time

IBM B2B Integrator vs Mule ESB

Compared 4% of the time

TIBCO ActiveMatrix Service Bus vs Mule ESB

Compared 4% of the time

More Mule ESB Competitors

IBM Sterling B2B Integration Services vs webMethods.io

Compared 4% of the time

IBM Integration Bus vs webMethods.io

Compared 4% of the time

Apigee vs webMethods.io

Compared 3% of the time

IBM App Connect vs webMethods.io

Compared 3% of the time

Microsoft Graph Data Connect vs webMethods.io

Compared 2% of the time

More webMethods.io Competitors

MuleSoft Anypoint Platform vs WSO2 Enterprise Integrator

Compared 10% of the time

IBM Integration Bus vs WSO2 Enterprise Integrator

Compared 8% of the time

Boomi iPaaS vs WSO2 Enterprise Integrator

Compared 7% of the time

TIBCO BusinessWorks vs WSO2 Enterprise Integrator

Compared 5% of the time

Precisely Connect vs WSO2 Enterprise Integrator

Compared 3% of the time

More WSO2 Enterprise Integrator Competitors

Product Reports

Buyer's Guide

Mule ESB

March 2026

Download Mule ESB product report

Buyer's Guide

webMethods.io

March 2026

Download webMethods.io product report

Buyer's Guide

WSO2 Enterprise Integrator

March 2026

Download WSO2 Enterprise Integrator product report

Also Known As

No data available

Built.io Flow, webMethods Integration Server, webMethods Trading Networks, webMethods ActiveTransfer, webMethods.io API

No data available

Overview

For companies looking to modernize and unlock the value of existing on-premises systems and applications, an enterprise service bus (ESB) architecture serves as a critical foundation layer for SOA. When deployed as an ESB, the Mule runtime engine of Anypoint Platform combines the power of data and application integration across legacy systems and SaaS applications, with a seamless path to the other capabilities of Anypoint Platform and the full power of API-led connectivity.

Salesforce

webMethods.io Integration is a powerful integration platform as a service (iPaaS) that provides a combination of capabilities offered by ESBs, data integration systems, API management tools, and B2B gateways.

IBM

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

Ube, PacificComp, University of Witwatersrand, Justice Systems, Camelot

Cisco, Agralogics, Dreamforce, Cables & Sensors, Sacramento Kings

West

Buyer's Guide

Enterprise Service Bus (ESB)

March 2026

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