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Pros & Cons summary

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Prominent pros & cons

PROS

Mule Expression Language and DataWeave provide powerful tools for data transformation and orchestration between systems.
The architecture based on events with numerous connectors allows seamless integration from both external and internal applications.
Mule ESB offers exemplary API management capabilities, including security policy application and analytical monitoring.
The number of connectors available simplifies connectivity and integration with various applications, significantly speeding up development processes.
Mule ESB's control plane and runtime plane enhance its use in microservice architectures and integration projects, providing stability and cohesion.

CONS

Mule ESB documentation is often cryptic, which can make it difficult for users to navigate through its functionalities.
The frequent product releases and troublesome upgrades can be overwhelming for users.
There is a lack of support for BPM and the process for handling message bus subscriptions is limited.
Mule ESB suffers from stability and scalability issues, prompting a need for frequent patches and updates.
The dependency on Maven should be removed, and more sample codes are necessary to improve user experience.
 

Mule ESB Pros review quotes

SC
Principal Architect And Management Council Member at a tech services company with 51-200 employees
Aug 21, 2017
Mule Expression Language
it_user642183 - PeerSpot reviewer
Sr. Integration Architect at a tech services company with 501-1,000 employees
Oct 21, 2017
Scalability and load balancing.
NT
Senior Integration Consultant at a tech services company with 51-200 employees
Oct 3, 2017
We can use Java expressions anywhere in the flow.
Learn what your peers think about Mule ESB. Get advice and tips from experienced pros sharing their opinions. Updated: December 2025.
879,986 professionals have used our research since 2012.
it_user805440 - PeerSpot reviewer
Applications Architect at Informatica Delta
Jan 21, 2018
The architecture based on events has several connectors which allow integration from external and internal applications of the company.
SC
Developer JAVA/JEE, Mule ESB at a computer software company with 11-50 employees
May 28, 2019
The most valuable feature is the Salesforce integration.
MU
Software Engineer at ADM
May 29, 2019
Once it is started, we don't see any problems on a day to day basis.
sudhir Kilani - PeerSpot reviewer
Developer at a tech services company with 1,001-5,000 employees
May 30, 2019
The most powerful feature is DataWeave, which is a powerful language where data can be transformed from one form into another.
JJ
IT Consultant at a financial services firm with 5,001-10,000 employees
Jun 19, 2019
The most valuable feature of Mule ESB is data transformation, i.e. our interacting with different systems and orchestrating for our business needs.
it_user1266102 - PeerSpot reviewer
Senior Architect at a tech services company with 10,001+ employees
Jan 26, 2020
The connectivity the solution provides is excellent. There are often too many systems that we have to integrate and this helps with that.
AB
Software Engineer at a tech services company with 51-200 employees
Feb 25, 2022
Easy connectivity and easy integration.
 

Mule ESB Cons review quotes

SC
Principal Architect And Management Council Member at a tech services company with 51-200 employees
Aug 21, 2017
Documentation is cryptic, product releases are far too frequent, and upgrades become troublesome.
it_user642183 - PeerSpot reviewer
Sr. Integration Architect at a tech services company with 501-1,000 employees
Oct 21, 2017
Limitation on external subscribers to listen to the messages on the bus.
NT
Senior Integration Consultant at a tech services company with 51-200 employees
Oct 3, 2017
It needs more samples. Also, the dependency on Maven should be removed.
Learn what your peers think about Mule ESB. Get advice and tips from experienced pros sharing their opinions. Updated: December 2025.
879,986 professionals have used our research since 2012.
it_user805440 - PeerSpot reviewer
Applications Architect at Informatica Delta
Jan 21, 2018
The payment system needs improvement.
SC
Developer JAVA/JEE, Mule ESB at a computer software company with 11-50 employees
May 28, 2019
The Anypoint platform consumes a lot of memory, and it would be great for developers if it were more lightweight.
MU
Software Engineer at ADM
May 29, 2019
We would like to have a built-in logging framework in which we can do auditing.
sudhir Kilani - PeerSpot reviewer
Developer at a tech services company with 1,001-5,000 employees
May 30, 2019
I would like to see support for BPM in the next release of this solution.
JJ
IT Consultant at a financial services firm with 5,001-10,000 employees
Jun 19, 2019
Mule ESB is more into the latest REST APIs, not much into the SOAP web services. Developing is all about web services and not easy with Mule.
it_user1266102 - PeerSpot reviewer
Senior Architect at a tech services company with 10,001+ employees
Jan 26, 2020
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. Mule's core IP should be more stable overall.
AB
Software Engineer at a tech services company with 51-200 employees
Feb 25, 2022
Lacking some connectors that could be included.