Curated List of Awesome Open-Source Workflow Engines

Complete Products

Airflow – A Python‑based platform for running tasks as directed acyclic graphs (DAGs).

Argo – An open‑source container‑native workflow engine for executing jobs on Kubernetes.

Azkaban – A batch workflow scheduler originally built at LinkedIn for Hadoop jobs.

Brigade – A tool that runs scripts and automates tasks in the cloud as part of a Kubernetes cluster.

Cadence – An orchestration engine from Uber Engineering for executing long‑running asynchronous business logic.

CloudSlang – A workflow engine that automates DevOps use cases.

Conductor – Netflix’s cloud‑native orchestration engine.

Copper – A high‑performance Java workflow engine.

Cromwell – A Scala‑written workflow engine that runs workflows defined in WDL or CWL.

Cylc – An engine for orchestrating complex distributed workflows using cyclic or acyclic graphs, originally designed for weather forecasting.

Digdag – A simple tool for building, running, scheduling, and monitoring complex task pipelines.

Fission Workflows – A high‑performance workflow engine for serverless functions on Kubernetes.

Flor – A workflow engine written in Ruby.

Imixs‑Workflow – A powerful, human‑centric workflow engine based on the BPMN 2.0 standard.

Kiba – A Ruby data‑processing and ETL framework.

Mistral – A workflow service built on OpenStack.

Oozie – Hadoop’s workflow scheduler.

Pegasus – Automates, recovers, and debugs scientific computing pipelines.

Pinball – A scalable workflow manager used at Pinterest.

Piper – A distributed Java workflow engine designed for simplicity.

RunDeck – A job scheduler and run‑book automation tool.

Titanoboa – A platform for creating complex workflows on the JVM.

Wexflow – A high‑performance, scalable, modular, cross‑platform workflow engine.

Workflow Core – A lightweight workflow engine for the .NET Standard.

Workflow Engine – A lightweight .NET and Java workflow engine.

Zeebe – A workflow engine for microservice orchestration that executes BPMN models developed by the Camunda team.

BPM Suites

Activiti – A leading lightweight, Java‑centric open‑source BPMN engine supporting real‑world process automation.

Activiti Cloud – The next‑generation business‑automation platform offering cloud‑native building blocks for distributed infrastructures.

Flowable – A compact, efficient open‑source business‑process engine providing BPM platforms for developers, administrators, and business users.

jBPM – A lightweight, extensible workflow engine written in pure Java that implements the BPMN 2.0 specification.

SAAS

Bip.io – Network automation for humans and robots.

Zenaton – A workflow engine offering data‑processing and background‑job capabilities for PHP, Node.js, Python, and Ruby.

Embedded Libraries

Camunda – A Java library and fully‑featured product for workflow and decision automation.

Captain – A lightweight, distributed Java workflow engine for microservice architectures.

Luigi – A Python module that helps build complex pipelines of batch jobs.

Viewflow – A reusable workflow library for organizing collaborative business logic in Django applications.

Workflow Core – A lightweight workflow engine for the .NET Standard.

For business‑process approval, choose Flowable. For job orchestration, choose Oozie or Airflow (Hadoop jobs → Oozie; other job types → Airflow). For microservice orchestration, choose Cadence or Zeebe. Which one will you pick?

Original source: https://github.com/meirwah/awesome-workflow-engines

Article: https://pub.intelligentx.net/curated-list-awesome-open-source-workflow-engines

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