Roundups of open-source workflow automation tools, BPM engines and durable execution engines, each comparing three self-hosted options.
n8n, Node-RED and Activepieces side by side, with Windmill and Kestra named for code-first and data orchestration needs: licenses (including n8n's source-available license), integrations, hosting and paid features.
Flowable, Camunda 7 and Activiti compared as embeddable BPMN engines, with Camunda 8's license change explained: standards support, maintenance status, Spring integration and migration.
Temporal, Cadence and Conductor compared for long-running, fault-tolerant workflows: programming model, persistence, SDKs, licenses and managed service options.
Rundeck, StackStorm and Ansible AWX compared for operations teams that want self-service jobs, event-driven remediation or an Ansible control plane, covering licensing, architecture, release activity and commercial editions.
Self-hosted engines for DMN business rules compared: Drools in Apache KIE, the Camunda 7 DMN engine and the Flowable DMN engine, covering DMN version support, embedding in Java applications, project status and how each pairs with a BPMN engine.
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