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Automation Integration · head to head

Activiti vs Slack Workflow Builder

Activiti logo

Activiti

Automation Integration

Apache 2.0 BPMN engine under Hyland, from which Flowable and Camunda were forked

From
Free
Rated
-
Full reviewWebsite
Slack Workflow Builder logo

Slack Workflow Builder

Remote Work

Automation for team collaboration

From
On request
Rated
-
Full reviewWebsite

The short version

  • Only Activiti has a free tier, so it costs nothing to try first.
  • Each has a real cost: Activiti the last stable release was 8.2.0 in January 2024, and while release candidate builds continue, a two-year gap between stable versions is a real risk signal for a production dependency.; Slack Workflow Builder limited to Pro and above pricing tiers, requiring paid Slack subscription
  • They diverge on capability: Activiti covers BPMN 2.0 engine, Slack Workflow Builder covers Workflow builder.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Activiti and Slack Workflow Builder actually diverge.

Attributes where Activiti and Slack Workflow Builder differ
AttributeActivitiSlack Workflow Builder
Starting priceFreeOn request
Pricing modelOpen source, no licence feeUnknown
Free tierYesNo
PlatformsLinux, Windows, Docker, KubernetesWeb, macOS, Windows, iOS, Android
CategoryAutomation IntegrationRemote Work
FoundedUnknown2013

Identical on both: user rating (Not yet rated).

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 Activiti

  • BPMN 2.0 engine
  • Activiti Cloud
  • Modeler
  • Java and REST APIs
  • Pluggable persistence
  • Identity integration

Only in Slack Workflow Builder

  • Workflow builder
  • App integrations
  • Scheduled workflows
  • Conditional logic
  • Error handling
  • Notifications
  • Analytics
  • 1000+ apps

What people use each for

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

Activiti

  • An Alfresco or Hyland content services deployment where Activiti is already the embedded workflow enginenot Slack Workflow Builder
  • A Java application that needs to embed a BPMN engine as a library under a permissive licencenot Slack Workflow Builder
  • An organisation that has ruled out Camunda 8 on licence grounds and needs an Apache 2.0 alternativenot Slack Workflow Builder
  • Document-centric approval workflows where the process engine sits inside the content management stack rather than beside itnot Slack Workflow Builder

Slack Workflow Builder

  • Workflow Automationnot Activiti
  • Data Integrationnot Activiti
  • Process Automationnot Activiti
  • App Integrationnot Activiti
  • API Connectivitynot Activiti

Where each one falls short

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

Activiti

  • The last stable release was 8.2.0 in January 2024, and while release candidate builds continue, a two-year gap between stable versions is a real risk signal for a production dependency.
  • Both Camunda and Flowable forked away and took large parts of the contributor base with them, so the community, tutorials and third-party tooling around Activiti are much thinner than around either fork.
  • Commercial support is only realistically available by buying Hyland Alfresco subscriptions, so there is no way to pay for Activiti support on its own.
  • Activiti Cloud imposes a distributed architecture of several Spring Boot services plus Keycloak, which is heavy for teams who simply wanted an embeddable engine.
  • Documentation is dated and partly split between old Alfresco sites and Hyland Connect, and the transition between Activiti 6, 7 and 8 architectures makes much of the older material actively misleading.

Slack Workflow Builder

  • Limited to Pro and above pricing tiers, requiring paid Slack subscription
  • Maximum 15 conditional branches per workflow, limiting complex logic paths
  • Connectors must be explicitly configured per integration type
  • No native web interface for non-Slack users

Pricing, plan by plan

Activiti

Free
  • ActivitiFree
    • Apache 2.0 licence
    • Embeddable Java library or Activiti Cloud services
    • No usage limits

Slack Workflow Builder

On request

No published plan breakdown. See the Slack Workflow Builder review.

Which should you pick?

Choose Activiti if

  • You need bpmn 2.0 engine.
  • You want to start without paying.
  • You work on Linux, Windows, Docker, Kubernetes.
  • You also want activiti cloud.
Activiti review

Choose Slack Workflow Builder if

  • You need workflow builder.
  • You work on Web, macOS, Windows, iOS, Android.
  • You also want app integrations.
Slack Workflow Builder review

Questions people ask

Is Activiti or Slack Workflow Builder better?
Neither clearly leads. Activiti starts at Free and Slack Workflow Builder at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Activiti or Slack Workflow Builder?
Activiti has a free tier; the other does not. Paid plans start at Free for Activiti and On request for Slack Workflow Builder.
Does Activiti or Slack Workflow Builder run on more platforms?
Activiti runs on Linux, Windows, Docker, Kubernetes. Slack Workflow Builder runs on Web, macOS, Windows, iOS, Android.
Can I use Activiti for free?
Yes. Activiti has a free tier, so you can try it without paying. Slack Workflow Builder starts at On request.
What is Activiti best used for?
Activiti is most often used for an alfresco or hyland content services deployment where activiti is already the embedded workflow engine, a java application that needs to embed a bpmn engine as a library under a permissive licence, an organisation that has ruled out camunda 8 on licence grounds and needs an apache 2.0 alternative, document-centric approval workflows where the process engine sits inside the content management stack rather than beside it. Of those, an alfresco or hyland content services deployment where activiti is already the embedded workflow engine and a java application that needs to embed a bpmn engine as a library under a permissive licence are not what Slack Workflow Builder is typically brought in for.
What can Activiti do that Slack Workflow Builder cannot?
Activiti covers BPMN 2.0 engine, Activiti Cloud, Modeler, Java and REST APIs. Slack Workflow Builder covers Workflow builder, App integrations, Scheduled workflows, Conditional logic.

Answered from the vendors’ own pages

Activiti: Is Activiti still maintained?

Yes, Hyland continues to publish builds, but the last stable release was 8.2.0 in January 2024.

Slack Workflow Builder: Is Slack Workflow Builder included in all Slack plans?

No, Workflow Builder is only available in Slack Pro, Business+, and Enterprise plans. It is not included in the Free plan.

Source
Activiti: What is its relationship to Camunda and Flowable?

Both are forks of Activiti: Camunda in 2013 and Flowable in 2016, when core developers left Alfresco.

Slack Workflow Builder: Can Workflow Builder connect to external applications?

Yes, Workflow Builder supports connectors that translate actions in Slack to instant results in third-party tools, allowing workflows to interact with your full application stack.

Source
Activiti: What licence is it?

Apache 2.0, which distinguishes it from Camunda 8’s source-available licence.

Slack Workflow Builder: What is the maximum complexity of Slack Workflows?

Workflows support conditional logic with up to 15 conditions, enabling complex decision paths for automation.

Source
Activiti: Should I choose Activiti for a new project?

Only if the Apache licence or an existing Alfresco deployment is decisive. Flowable and Camunda have far larger ecosystems.

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