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Automation Integration · head to head

Flowable vs IBM MQ

Flowable logo

Flowable

Automation Integration

Apache 2.0 BPMN, CMMN and DMN engine from the team that originally built Activiti

From
Free
Rated
-
Full reviewWebsite
IBM MQ logo

IBM MQ

Automation Integration

Transactional message queuing for systems where a lost message is a lost payment

From
$312/month
Rated
-
Full reviewWebsite

The short version

  • Only Flowable has a free tier, so it costs nothing to try first.
  • Each has a real cost: Flowable the open source engine is genuinely usable but ships without the modelling studio, work application and admin console, so an open source deployment means building your own user interfaces before anyone can use it.; IBM MQ virtual Processor Core licensing is capacity-based, so an over-provisioned server is charged for cores the queue manager never uses, and consumption ratios differ between MQ and MQ Advanced.
  • They diverge on capability: Flowable covers BPMN 2.0 engine, IBM MQ covers Assured once-only delivery.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Flowable and IBM MQ actually diverge.

Attributes where Flowable and IBM MQ differ
AttributeFlowableIBM MQ
Starting priceFree$312/month
Pricing modelquotePer virtual processor core per month
Free tierYesNo
PlatformsLinux, Windows, Docker, Kubernetes, CloudLinux, Windows, Docker, Kubernetes

Identical on both: user rating (Not yet rated), category (Automation Integration).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Flowable

  • BPMN 2.0 engine
  • CMMN case management
  • DMN decision tables
  • Spring Boot integration
  • Modelling studio
  • Task and case application
  • REST APIs
  • History and audit

Only in IBM MQ

  • Assured once-only delivery
  • Multi-platform queue managers
  • Native high availability
  • Advanced Message Security
  • Managed File Transfer
  • MQ Telemetry

What people use each for

The jobs each tool is most often brought in to do.

Flowable

  • An insurer automating claims handling where each case follows a different path and BPMN alone cannot express itnot IBM MQ
  • A bank embedding process orchestration inside an existing Spring Boot estate rather than buying a separate platformnot IBM MQ
  • A team leaving Activiti or jBPM that wants the same API family with active commercial maintenancenot IBM MQ
  • A regulated organisation needing complete process history and decision table audit trails for supervisorsnot IBM MQ

IBM MQ

  • Core banking or payments where a message must participate in the same transaction as a database updatenot Flowable
  • A mainframe estate that needs reliable messaging between z/OS applications and distributed Linux servicesnot Flowable
  • Regulated file movement that must be auditable end to end, using Managed File Transfernot Flowable
  • Replacing bespoke retry and idempotency code in inter-system integrations with a queue that guarantees once-only deliverynot Flowable

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Flowable

  • The open source engine is genuinely usable but ships without the modelling studio, work application and admin console, so an open source deployment means building your own user interfaces before anyone can use it.
  • It expects Java engineering capacity; teams looking for a business-user low-code automation tool will find the modelling and deployment cycle far too technical.
  • Enterprise pricing is not published and is quoted per deployment, leaving buyers without a benchmark against Camunda or IBM alternatives.
  • The Activiti fork left three engines with related APIs and overlapping documentation in circulation, and search results routinely return advice for the wrong one.
  • Flowable AG is a small Swiss company relative to its competitors, so the partner network, training market and pool of engineers with production experience are all limited outside Europe.

IBM MQ

  • Virtual Processor Core licensing is capacity-based, so an over-provisioned server is charged for cores the queue manager never uses, and consumption ratios differ between MQ and MQ Advanced.
  • Container licensing requires Kubernetes with the IBM License Service, so Podman or plain Docker deployments cannot use the optimised metric and pay materially more.
  • Distributed and z/OS platforms use different licensing models, and organisations running both routinely misapply one to the other, which surfaces as exposure at audit.
  • Operating MQ needs specialist skills that are increasingly scarce, and the pool of engineers who understand channel and queue manager administration is shrinking with every retirement.
  • IBM’s acquisition of Confluent in March 2026 puts MQ and Kafka under one vendor, which resolves the integration story but removes the competitive tension that kept renewal negotiations honest.

Pricing, plan by plan

Flowable

Free
  • Flowable Open SourceFree
    • Apache 2.0 licensed BPMN, CMMN and DMN engines
    • Embeddable Java library or standalone apps
    • No modelling studio or enterprise applications
  • Flowable Enterprise$undefined/year
    • Modelling studio, work application and admin console
    • Connectors, forms and advanced identity management
    • Support with SLA and version maintenance

IBM MQ

$312/month
  • IBM MQ$312/month
    • Per Virtual Processor Core subscription
    • Minimum one year term
    • Assured once-only delivery
  • IBM MQ Advanced$583/month
    • Per Virtual Processor Core subscription
    • Advanced Message Security
    • Managed File Transfer
  • Pay as you go$undefined/month
    • Approximately 1.02 USD per Virtual Processor Core per hour
    • No annual commitment
    • Suited to variable or short-lived capacity

Which should you pick?

Choose Flowable if

  • You need bpmn 2.0 engine.
  • You want to start without paying.
  • You work on Linux, Windows, Docker, Kubernetes, Cloud.
  • You also want cmmn case management.
Flowable review

Choose IBM MQ if

  • You need assured once-only delivery.
  • You work on Linux, Windows, Docker, Kubernetes.
  • You also want multi-platform queue managers.
IBM MQ review

Questions people ask

Is Flowable or IBM MQ better?
Neither clearly leads. Flowable starts at Free and IBM MQ at $312/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Flowable or IBM MQ?
Flowable has a free tier; the other does not. Paid plans start at Free for Flowable and $312/month for IBM MQ.
Does Flowable or IBM MQ run on more platforms?
Flowable runs on Linux, Windows, Docker, Kubernetes, Cloud. IBM MQ runs on Linux, Windows, Docker, Kubernetes.
Can I use Flowable for free?
Yes. Flowable has a free tier, so you can try it without paying. IBM MQ starts at $312/month.
What is Flowable best used for?
Flowable is most often used for an insurer automating claims handling where each case follows a different path and bpmn alone cannot express it, a bank embedding process orchestration inside an existing spring boot estate rather than buying a separate platform, a team leaving activiti or jbpm that wants the same api family with active commercial maintenance, a regulated organisation needing complete process history and decision table audit trails for supervisors. Of those, an insurer automating claims handling where each case follows a different path and bpmn alone cannot express it and a bank embedding process orchestration inside an existing spring boot estate rather than buying a separate platform are not what IBM MQ is typically brought in for.
What can Flowable do that IBM MQ cannot?
Flowable covers BPMN 2.0 engine, CMMN case management, DMN decision tables, Spring Boot integration. IBM MQ covers Assured once-only delivery, Multi-platform queue managers, Native high availability, Advanced Message Security.

Answered from the vendors’ own pages

Flowable: Is Flowable open source?

Yes, the BPMN, CMMN and DMN engines are Apache 2.0. The modelling studio and enterprise applications are commercial.

IBM MQ: How is IBM MQ licensed?

By Virtual Processor Core subscription, around 312 US dollars per VPC per month for MQ and 583 for MQ Advanced, minimum one year.

Flowable: How does it relate to Activiti and jBPM?

The same core developers built jBPM, then Activiti, then forked Activiti in 2016 to create Flowable.

IBM MQ: Should we replace MQ with Kafka?

Only if you actually need a replayable log. MQ is a transactional queue; replacing it with Kafka usually means rebuilding transactional semantics in application code.

Flowable: What does Flowable Enterprise cost?

Nothing is published. It is quoted per deployment by the vendor.

IBM MQ: What does MQ Advanced add?

Advanced Message Security, Managed File Transfer, MQTT telemetry and quorum-based high availability.

Flowable: Why choose it over Camunda?

CMMN case management is a first-class engine, which matters when work is exception-driven rather than a fixed sequence.

IBM MQ: Does container deployment change the cost?

Yes. Optimised container licensing needs Kubernetes with the IBM License Service; Podman or Docker deployments do not qualify.

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