head to head · open source
airflow vs Seal-Report
airflow has 47,357 GitHub stars, 18,287 forks, 1,831 open issues and last shipped yesterday. Seal-Report has 1,642 stars, 508 forks, 21 open issues and last shipped 2 days ago. airflow leads on adoption by 2,784% (47,357 vs 1,642 stars). airflow is written in Python under Apache-2.0; Seal-Report is written in C# under MIT. airflow has attracted 39% as many forks as stars, Seal-Report 31%. airflow was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (etl), so they are genuine substitutes rather than adjacent tools.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| airflow | Seal-Report | |
|---|---|---|
| GitHub stars | ★ 47K | ★ 1.6K |
| License | Apache-2.0 | MIT |
| Written in | Python | C# |
| Last push | 2026-11-04 | 2026-11-03 |
| Forks | ⑂ 18K | ⑂ 508 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick airflow if
- You weight community size — 47K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick Seal-Report if
- You want the Seal-Report feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches C#
- You evaluated both and Seal-Report fits your workflow better
About airflow
Apache Airflow Apache Airflow (or simply Airflow) is a platform to programmatically author, schedule, and monitor workflows. When workflows are defined as code, they become more maintainable, versionable, testable, and collaborative. Use Airflow to author workflows (Dags) that orchestrate tasks. The Airflow scheduler executes your tasks on an array of workers while following the specified dependencies. Rich command line utilities make performing complex surgeries on Dags a snap. The rich user interface makes it easy to visualize pipelines running in production, monitor progress, and troubleshoot issues when…
read the full airflow overview →
About Seal-Report
Seal Report & Task Seal Report & Task is a complete open source framework for producing reports from any database or NoSQL source, and for performing complex tasks (ETL, batch). Entirely written in C for Microsoft .NET, and free for everyone under the MIT License . The product focuses on easy installation and report design : once set up, reports can be built and published in a minute. Web site & quick start guides : sealreport.org Live demo of the Web Report Server: sealreport.org/demo Free support & community : GitHub Discussions Main Features Dynamic SQL sources : Use your own SQL, or let the Seal engine build…
read the full Seal-Report overview →
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Frequently asked questions
Is airflow or Seal-Report more popular?
airflow has 47,357 GitHub stars and Seal-Report has 1,642. airflow has the larger community by that measure.
Are airflow and Seal-Report free?
Both are open source. airflow is licensed under Apache-2.0 and Seal-Report under MIT. Neither carries a licence fee.
What is the difference between airflow and Seal-Report?
airflow is written in Python and Seal-Report in C#. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, airflow or Seal-Report?
Choose airflow if you want the larger community (47,357 stars) or its Apache-2.0 licence terms. Choose Seal-Report if its feature set, stack or MIT licence fits better. Both are self-hostable.