Head-to-Head Comparison · Alternative to Astronomer · 🤖 automation
Astronomer vs Mage
Open-source data pipeline platform for effortless data integration, transformation, and orchestration using Python, SQL, and R. Here is how Mage ($0/mo open source) stacks up against Astronomer ($15/mo) across cost, hosting, data privacy, and real-world trade-offs.
Mage is a verified Open Source-licensed open-source replacement for Astronomer. Switching from Astronomer ($15/mo) saves $180/yr per solo seat, or $900/yr for a 5-person team. Deployment: Runs on Self-host.
The catch: Requires self-hosting setup, updates, and server maintenance compared to managed Astronomer.
Astronomer vs Mage Specifications
facts verified 2026-11-07
| Dimension | Astronomer (Paid) | Mage (Replacement) |
|---|---|---|
| Monthly Price | $15 / mo | $0 / mo |
| 1-Year Cost (1 seat) | $180 / yr | $0 / yr (Save $180) |
| 1-Year Cost (5 seats) | $900 / yr | $0 / yr (Save $900) |
| 1-Year Cost (10 seats) | $1,800 / yr | $0 / yr (Save $1,800) |
| Source & License | Proprietary SaaS | open source Open Source |
| Where It Runs | Vendor Cloud | Self-host (your server) |
| Platforms | Web / Cloud | webself-hosteddocker to self-host |
| GitHub Stars | — | ★ 8.8k (active nov 2026) |
Deep Dive: Switching from Astronomer to Mage
Trade-offs, installation & data architecture
What you trade away
Requires self-hosting setup, updates, and server maintenance compared to managed Astronomer.
How to deploy Mage
Clone https://github.com/mage-ai/mage-ai or deploy with Docker Compose
What it takes to run
Deploy via Docker or binary release from GitHub and configure environment variables.
Where your data lives
All application data and configuration live on your own server or local database.
Why fork Mage instead of vibe-coding a Astronomer clone?
Instead of paying recurring SaaS fees for Astronomer or rebuilding it from scratch, deploy one of the 4 battle-tested open-source alternatives like Kestra.
Astronomer vs Mage FAQ
Is Mage a good free alternative to Astronomer?+
Yes. Mage is a verified open-source (Open Source) replacement for Astronomer. Open-source data pipeline platform for effortless data integration, transformation, and orchestration using Python, SQL, and R.
What is the catch when switching from Astronomer to Mage?+
Requires self-hosting setup, updates, and server maintenance compared to managed Astronomer.
How much do you save switching from Astronomer to Mage?+
Astronomer costs $15/mo ($180/yr) per seat, whereas Mage is $0/mo. Switching saves $180/yr for a solo user, $900/yr for a 5-person team, and $1,800/yr for a 10-person team.
How do I install or self-host Mage instead of Astronomer?+
Install: Clone https://github.com/mage-ai/mage-ai or deploy with Docker Compose. Setup: Deploy via Docker or binary release from GitHub and configure environment variables.
