Best Open Source Alternatives to Astronomer Cloud

Compare the best free and open-source alternatives to Astronomer Cloud — self-hosted and desktop replacements you fully control, ranked by GitHub stars, license and platform support.

Curated by open-source.store · Updated August 2026 · 6 alternatives

Astronomer Cloud

Proprietary SaaS

PricingPaid

Platformsweb, docker

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Astronomer Cloud alternatives compared

Open-source alternatives to Astronomer Cloud, compared by stars, license and platform
Tool		License	Platforms	Self-hosted
Apache Airflow	46,351	Apache-2.0	LinuxDockerWeb	Yes	Aug 2026	Visit
Kestra	27,527	Apache-2.0	LinuxDockerWebmacOS	Yes	Aug 2026	Visit
Prefect	23,519	Apache-2.0	LinuxmacOSWindowsDocker	Yes	Aug 2026	Visit
Temporal	22,032	MIT	LinuxmacOSDockerWindows	Yes	Aug 2026	Visit
Dagster	15,921	Apache-2.0	LinuxmacOSDockerWeb	Yes	Jul 2026	Visit
Rundeck Community	6,250	Apache-2.0	LinuxDockerWebWindows	Yes	Jul 2026	Visit

Top open-source Astronomer Cloud alternatives

Apache Airflow46,351Apache-2.0

An open-source platform to programmatically author, schedule, and monitor workflows.

LinuxDockerWeb

vs Astronomer Cloud: a free, open-source option you fully control, licensed Apache-2.0.

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Kestra27,527Apache-2.0

An open-source declarative orchestrator that makes building complex pipelines simple.

LinuxDockerWebmacOSWindows

vs Astronomer Cloud: a free, open-source option you fully control, licensed Apache-2.0.

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Prefect23,519Apache-2.0

A workflow orchestration engine designed for building, running, and monitoring data pipelines.

LinuxmacOSWindowsDocker

vs Astronomer Cloud: a free, open-source option you fully control, licensed Apache-2.0.

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Temporal22,032MIT

A microservices orchestration platform that enables developers to build highly reliable applications.

LinuxmacOSDockerWindows

vs Astronomer Cloud: a free, open-source option you fully control, licensed MIT.

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Dagster15,921Apache-2.0

A cloud-native orchestrator for the entire data lifecycle, from ingestion to analytics.

LinuxmacOSDockerWeb

vs Astronomer Cloud: a free, open-source option you fully control, licensed Apache-2.0.

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Best Open Source Alternatives to Astronomer Cloud

Astronomer Cloud

Astronomer Cloud alternatives compared

Top open-source Astronomer Cloud alternatives

More alternatives to Astronomer Cloud

Rundeck Community