SHSelfHostIndex

Conductor OSS vs Prefect

A side-by-side comparison of two self-hosted automation & workflows options — licensing, setup difficulty, resource needs, and what each one replaces.

Not the right match-up?
CO Conductor OSS Microservices and workflow orchestration engine VS PR Prefect Modern workflow orchestration for data and Python pipelines
FeatureConductor OSSPrefect
Deploy effortUnder-an-hour setupUnder-an-hour setup
Health score98 · Excellent97 · Excellent
CategoryAutomation & WorkflowsAutomation & Workflows
LicenseApache-2.0Apache-2.0
LanguageJavaPython
Setup difficultyHardMedium
Min. RAM2,048 MB1,024 MB
Deploymentdocker, kubernetes, bare-metaldocker, kubernetes, helm
GitHub stars★ 32,227★ 23,913
First released20162018
ReplacesAWS Step Functions, CamundaAWS Step Functions, Azure Data Factory

What are Conductor OSS and Prefect?

Conductor OSS

Conductor is a platform created to orchestrate microservices and business processes at scale. It lets teams define workflows as JSON and run them across distributed task workers.

  • JSON-defined workflows
  • Distributed task workers
  • Visual workflow editor
  • Built for microservice orchestration

Read the full Conductor OSS guide →

Prefect

Prefect is a workflow orchestration tool that turns Python functions into observable, schedulable pipelines. The open-source server can be self-hosted to coordinate and monitor flow runs.

  • Pythonic flow and task definitions
  • Dynamic, event-driven workflows
  • Self-hostable orchestration server
  • Rich observability dashboard

Read the full Prefect guide →

Conductor OSS vs Prefect: key differences

Conductor OSS is written in Java, while Prefect is built with Python. Prefect is the lighter option, starting around 1,024 MB of RAM against 2,048 MB for Conductor OSS. Conductor OSS is the more established project (first released 2016), while Prefect arrived in 2018.

Why pick each one

Choose Conductor OSS if…

  • Battle-tested at scale
  • Language-agnostic workers

Watch out for

  • Java stack is resource heavy
Conductor OSS details

Choose Prefect if…

  • Pleasant developer experience
  • Flexible dynamic workflows

Watch out for

  • Some features tied to Prefect Cloud
Prefect details

Frequently asked questions

Is Conductor OSS or Prefect better?

Neither is universally better. Conductor OSS has the larger community, while Prefect is simpler to set up (medium difficulty). Choose based on the comparison table above and your own setup.

Are Conductor OSS and Prefect free and open-source?

Yes. Conductor OSS is licensed under Apache-2.0 and Prefect under Apache-2.0. Both can be self-hosted at no software cost.

Can I run Conductor OSS and Prefect with Docker?

Conductor OSS: yes. Prefect: yes.

Which is lighter on resources, Conductor OSS or Prefect?

Prefect has the smaller minimum footprint at 1,024 MB of RAM, compared to about 2,048 MB for Conductor OSS. Real-world usage depends on library size, user count, and enabled features.

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