Flowable vs Activiti vs Camunda: Self-Hosted BPMN Engines Compared (2026)

Business Process Management (BPMN) engines are the backbone of enterprise workflow automation. They allow organizations to model, execute, and monitor complex business processes using the BPMN 2.0 standard. Whether you’re orchestrating approval workflows, handling case management, or building microservice choreography, a self-hosted BPMN engine gives you full control over your process data.

In this guide, we compare three leading open-source BPMN engines — Flowable, Activiti, and Camunda — all of which share a common ancestry but have evolved into distinct platforms with different strengths.

Historical Context: The BPMN 2.0 Family Tree

All three engines trace their roots back to jBPM and the original Activiti project created by Alfresco in 2010. When key developers left Alfresco, the codebase split:

• Activiti remained as the original project under Alfresco (now part of the Activiti Cloud ecosystem)
• Flowable was forked from Activiti 6 by the original creators in 2016, focusing on a lighter, more developer-friendly engine
• Camunda was also forked from Activiti but evolved into a full process orchestration platform with its own engine (Camunda 7) and a newer Zeebe-based engine (Camunda 8)

Comparison Table

Flowable

Flowable is a lightweight, high-performance BPM platform created by the original Activiti team. It emphasizes developer experience with clean APIs, excellent Spring Boot integration, and a comprehensive set of tools.

Key Features

• Six engines: BPMN (process), CMMN (case), DMN (decision), Form, App, and Content
• Flowable UI: Web-based application for process modeling, task management, and administration
• Flowable Design: Eclipse/VS Code plugin for visual process modeling
• Event registry: Event-driven process triggers via JMS, Kafka, or RabbitMQ
• Dynamic BPMN: Modify running process instances at runtime

Docker Compose Deployment

Flowable provides an official Docker image with a complete UI stack:

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28

version: '3.8'
services:
  flowable-ui:
    image: flowable/flowable-ui:latest
    ports:
      - "8080:8080"
    environment:
      - SERVER_PORT=8080
      - spring.datasource.driver-class-name=org.postgresql.Driver
      - spring.datasource.url=jdbc:postgresql://flowable-db:5432/flowable
      - spring.datasource.username=flowable
      - spring.datasource.password=flowable
    depends_on:
      - flowable-db
    restart: unless-stopped

  flowable-db:
    image: postgres:16
    environment:
      - POSTGRES_DB=flowable
      - POSTGRES_USER=flowable
      - POSTGRES_PASSWORD=flowable
    volumes:
      - flowable-data:/var/lib/postgresql/data
    restart: unless-stopped

volumes:
  flowable-data:

Installation Commands

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13

# Via Homebrew (macOS)
brew install flowable

# Via Docker (quickest start)
docker run -d -p 8080:8080 flowable/flowable-ui:latest

# Via Maven dependency (Spring Boot project)
# Add to pom.xml:
# <dependency>
#   <groupId>org.flowable</groupId>
#   <artifactId>flowable-spring-boot-starter</artifactId>
#   <version>7.0.1</version>
# </dependency>

Activiti

Activiti is the original BPMN 2.0 engine, now maintained by the Apache Software Foundation. It focuses on simplicity and embeddability — you can drop the engine into any Java application.

Key Features

• Lightweight core: Small footprint, easy to embed in any Java application
• Activiti Cloud: Cloud-native architecture built on Spring Boot and Spring Cloud
• Process designer: Visual BPMN editor with drag-and-drop modeling
• Strong community: Longest history, largest user base, extensive documentation
• Apache 2.0 license: Fully open-source with no commercial restrictions

Docker Compose Deployment

While Activiti doesn’t publish an official all-in-one Docker image, you can deploy it with PostgreSQL:

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26

version: '3.8'
services:
  activiti:
    image: alfresco/activiti-admin:latest
    ports:
      - "8080:8080"
    environment:
      - spring.datasource.url=jdbc:postgresql://activiti-db:5432/activiti
      - spring.datasource.username=activiti
      - spring.datasource.password=activiti
    depends_on:
      - activiti-db
    restart: unless-stopped

  activiti-db:
    image: postgres:16
    environment:
      - POSTGRES_DB=activiti
      - POSTGRES_USER=activiti
      - POSTGRES_PASSWORD=activiti
    volumes:
      - activiti-data:/var/lib/postgresql/data
    restart: unless-stopped

volumes:
  activiti-data:

Installation Commands

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13

# Via Maven dependency
# Add to pom.xml:
# <dependency>
#   <groupId>org.activiti</groupId>
#   <artifactId>activiti-spring-boot-starter</artifactId>
#   <version>7.1.0.M6</version>
# </dependency>

# Via Gradle
# implementation 'org.activiti:activiti-spring-boot-starter:7.1.0.M6'

# Activiti CLI (for local development)
npm install -g activiti-cli

Camunda Platform 7

Camunda Platform 7 is the mature, production-tested process orchestration engine. It offers a powerful combination of BPMN workflow execution, DMN decision automation, and deep observability.

Key Features

• Camunda Modeler: Desktop application for BPMN, DMN, and Form modeling
• Camunda Optimize: Process analytics and reporting (commercial)
• External Tasks Pattern: Decoupled worker execution — workers can be in any language
• Embedded forms: Camunda Forms for human task interfaces
• Strong observability: Built-in metrics, history, and audit logging
• Camunda 8 (Zeebe): Cloud-native, event-driven engine for high-throughput scenarios

Docker Compose Deployment

Camunda provides an official all-in-one Docker image:

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30

version: '3.8'
services:
  camunda:
    image: camunda/camunda-bpm-platform:latest
    ports:
      - "8080:8080"
      - "9600:9600"  # Metrics endpoint
    environment:
      - DB_DRIVER=org.postgresql.Driver
      - DB_URL=jdbc:postgresql://camunda-db:5432/camunda
      - DB_USERNAME=camunda
      - DB_PASSWORD=camunda
      - WAIT_FOR=true
      - WAIT_FOR_TIMEOUT=120
    depends_on:
      - camunda-db
    restart: unless-stopped

  camunda-db:
    image: postgres:16
    environment:
      - POSTGRES_DB=camunda
      - POSTGRES_USER=camunda
      - POSTGRES_PASSWORD=camunda
    volumes:
      - camunda-data:/var/lib/postgresql/data
    restart: unless-stopped

volumes:
  camunda-data:

Installation Commands

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16

# Via Homebrew (macOS)
brew install camunda

# Via Docker (quickest start)
docker run -d -p 8080:8080 camunda/camunda-bpm-platform:latest

# Via Maven dependency (Spring Boot)
# Add to pom.xml:
# <dependency>
#   <groupId>org.camunda.bpm.springboot</groupId>
#   <artifactId>camunda-bpm-spring-boot-starter</artifactId>
#   <version>7.21.0</version>
# </dependency>

# Camunda Modeler (desktop app)
# Download from https://camunda.com/download/modeler/

Choosing the Right Engine

Choose Flowable if:

• You need CMMN case management alongside BPMN processes
• You want the most comprehensive open-source feature set with no commercial tier limitations
• Multi-tenancy and process migration are important for your architecture
• You prefer a clean, well-documented API with strong Spring Boot integration

Choose Activiti if:

• You want the simplest, most embeddable engine
• You prefer an Apache Foundation project with fully open governance
• Your use case is straightforward workflow automation without advanced features
• You need the largest community and longest support history

Choose Camunda if:

• You need enterprise-grade observability and audit capabilities
• You want the External Tasks pattern for polyglot worker execution
• You plan to scale to Camunda 8 (Zeebe) for cloud-native, high-throughput scenarios
• Commercial support and a mature ecosystem are priorities

For more on workflow orchestration patterns, see our Dagu vs Netflix Conductor vs Airflow guide and Tekton vs Argo Workflows comparison.

FAQ

What is BPMN 2.0 and why does it matter?

BPMN 2.0 (Business Process Model and Notation) is an ISO-standardized graphical notation for modeling business processes. It provides a common language that both business analysts and developers can understand. BPMN engines execute these models as actual workflows, making it possible to change business logic by editing diagrams rather than rewriting code.

Can I migrate between these engines?

Flowable and Activiti share the same database schema (since Flowable was forked from Activiti 6), making migration between them relatively straightforward. Camunda also shares the Activiti DNA but has diverged more significantly. Migration tools exist for all three, but expect some effort for complex process definitions.

Do these engines support microservice architectures?

Yes. All three engines support the External Tasks pattern (or equivalent), where the engine publishes work items to a queue and independent workers (in any language) pick them up and complete them. This decouples the process engine from service implementations, making it ideal for microservice architectures.

Which engine has the best performance?

Flowable is generally recognized as the fastest in raw process execution benchmarks due to its optimized async job executor and lightweight core. Camunda’s external task pattern adds a small overhead but provides better scalability for distributed workloads. Activiti sits in the middle — performant but not optimized to the same degree.

Are there any licensing concerns?

All three engines are released under the Apache 2.0 license for their core functionality. However, each offers commercial editions with additional features (monitoring, analytics, support). Flowable’s open-source edition is the most feature-complete, while Camunda and Activiti reserve some advanced capabilities for their paid tiers.

Can these engines handle human tasks?

Yes. All three provide task management capabilities where processes pause at user tasks and resume when humans complete them via web forms or APIs. Flowable has the most comprehensive built-in task UI, while Camunda integrates with external form systems and Activiti provides basic task management.