Workflow and BPM

Comparisons of open-source workflow, BPM and orchestration engines, from BPMN engines such as Flowable and Camunda 7 to code-first Temporal, low-code n8n and Node-RED, and Apache Airflow.

n8n

Comparisons anchored on n8n, the fair-code workflow automation platform under the Sustainable Use License, which is not OSI open source: against Node-RED, Temporal and Activepieces.

Temporal

Comparisons anchored on Temporal, the MIT-licensed durable execution platform: against Apache Airflow and Flowable.

Flowable

Comparisons anchored on Flowable, the Apache-2.0 BPMN, CMMN and DMN engine, against Camunda 7 after its Community Edition end of life.

Camunda 7

Comparisons anchored on Camunda 7, the Apache-2.0 Java BPMN engine whose Community Edition stopped receiving releases in October 2025, against the community and vendor forks that keep its API and database schema.

Kestra

Comparisons anchored on Kestra, the Apache-2.0 event-driven orchestrator with declarative YAML flows and a paid Enterprise Edition, against other self-hosted workflow platforms.

Workflow and BPM compared

Roundups of open-source workflow automation tools, BPM engines and durable execution engines, each comparing three self-hosted options.

Operaton

Comparisons anchored on Operaton, the Apache-2.0 community fork of Camunda 7 CE with no commercial edition, against other paths for Camunda 7 users.

Node-RED

Comparisons anchored on Node-RED, the Apache-2.0 flow-based low-code tool from the OpenJS Foundation used for IoT, edge and event-driven integration.

Windmill

Comparisons anchored on Windmill, the script-first developer platform for flows and internal apps with an AGPLv3 core and a paid Enterprise Edition.

Activepieces

Comparisons anchored on Activepieces, the TypeScript workflow automation platform with an MIT community edition and commercially licensed enterprise code.

Conductor

Comparisons anchored on Conductor OSS, the Apache-2.0 durable workflow engine from Netflix now maintained by Orkes and the community.

Rundeck

Comparisons anchored on Rundeck, PagerDuty's Apache-2.0 runbook automation service, against other self-hosted operations automation tools.

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