head to head · open source
luigi vs appointment
luigi has 18,775 GitHub stars, 2,463 forks, 175 open issues and last shipped 2 months ago. appointment has 552 stars, 29 forks, 186 open issues and last shipped 2 days ago. luigi leads on adoption by 3,301% (18,775 vs 552 stars). luigi is written in Python under Apache-2.0; appointment is written in Python under MPL-2.0. luigi has attracted 13% as many forks as stars, appointment 5%. appointment was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (scheduling), 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
| luigi | appointment | |
|---|---|---|
| GitHub stars | ★ 19K | ★ 552 |
| License | Apache-2.0 | MPL-2.0 |
| Written in | Python | Python |
| Last push | 2026-07-18 | 2026-09-16 |
| Forks | ⑂ 2.5K | ⑂ 29 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick luigi if
- You weight community size — 19K 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 appointment if
- You want the appointment feature set and don't need the biggest community
- You prefer the MPL-2.0 license terms
- Your stack matches Python
- You evaluated both and appointment fits your workflow better
About luigi
Luigi is a Python module for building complex pipelines of batch jobs, handling dependency resolution, workflow management, visualization, and failure handling, aimed at data engineers and teams who need to stitch together long running tasks such as Hadoop, Hive, Pig, Spark, or local Python jobs into repeatable workflows.
read the full luigi overview →
About appointment
Thunderbird Appointment is a self hostable, MPL 2.0 licensed scheduling application from the Thunderbird project that lets someone publish their availability and invite others to book open times on their calendar, and it is aimed at individuals, teams and organisations that want a booking link workflow running on infrastructure they control.
read the full appointment overview →
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Frequently asked questions
Is luigi or appointment more popular?
luigi has 18,775 GitHub stars and appointment has 552. luigi has the larger community by that measure.
Are luigi and appointment free?
Both are open source. luigi is licensed under Apache-2.0 and appointment under MPL-2.0. Neither carries a licence fee.
What is the difference between luigi and appointment?
luigi is written in Python and appointment in Python. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, luigi or appointment?
Choose luigi if you want the larger community (18,775 stars) or its Apache-2.0 licence terms. Choose appointment if its feature set, stack or MPL-2.0 licence fits better. Both are self-hostable.