Activepieces 
- Open source no-code business automation, alternative to Zapier
Airflow 
- Python-based platform for running directed acyclic graphs (DAGs) of tasks
Argo Workflows 
- Open source container-native workflow engine for getting work done on Kubernetes
Conductor 
- Conductor is a microservices orchestration platform that enables developers to build scalable, durable application flows. Conductor workflows are language and framework-agnostic. The Conductor is maintained by Orkes and a team of open-source contributors.
Dagster 
- Data orchestrator for machine learning, analytics, and ETL.
Dapr Workflows 
- Author and execute durable & long-running Workflow-as-code at scale in Python, Javascript, .NET, Java & Go. Based on the Open-source Durable Task Framework.
DolphinScheduler 
Apache DolphinScheduler is a distributed and extensible workflow scheduler platform with powerful DAG visual interfaces, dedicated to solving complex job dependencies in the data pipeline and providing various types of jobs available out of box.
Kestra 
- Open source data orchestration and scheduling platform with declarative syntax.
Huginn 
- Create agents that monitor and act on your behalf. Your agents are standing by!
N8n-io 
- Free and open node based Workflow Automation Tool. Easily automate tasks across different services.
Node-RED 
- Node-RED is a NodeJS based workflow tool featuring a browser based editor for wiring together hardware devices, APIs and online services in new and interesting ways.
Prefect 
- Prefect is a new workflow management system, designed for modern infrastructure and powered by the open-source Prefect Core workflow engine
Temporal 
- Temporal is a microservice orchestration platform which enables developers to build scalable applications without sacrificing productivity or reliability. Temporal is a mature technology, a fork of Uber's Cadence. Temporal is being developed by Temporal Technologies, a startup by the creators of Cadence.
Windmill 
- Turn scripts into workflows and UIs. Open-source alternative to Airplane and Retool.
Activiti 
- Activiti is a leading lightweight, java-centric open-source BPMN engine supporting real-world process automation needs.
C++ Workflow 
- C++ Parallel Computing and Asynchronous Networking Engine.
Luigi 
- Python module that helps you build complex pipelines of batch jobs.
