head to head · open source
Cal.com vs apscheduler
Cal.com has 49,651 GitHub stars, 15,521 forks, 1,432 open issues and last shipped yesterday. apscheduler has 7,678 stars, 815 forks, 53 open issues and last shipped 8 days ago. Cal.com leads on adoption by 547% (49,651 vs 7,678 stars). Cal.com is written in TypeScript under MIT; apscheduler is written in Python under MIT. Cal.com has attracted 31% as many forks as stars, apscheduler 11%. Cal.com was the more recently maintained of the two, and both are self-hostable with no licence fee.
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
| Cal.com | apscheduler | |
|---|---|---|
| GitHub stars | ★ 50K | ★ 7.7K |
| License | MIT | MIT |
| Written in | TypeScript | Python |
| Last push | 2026-11-02 | 2026-10-26 |
| Forks | ⑂ 16K | ⑂ 815 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Cal.com if
- You weight community size — 50K stars and counting
- You want the MIT license terms
- Your stack matches TypeScript
- You value the larger contributor base for long-term maintenance
pick apscheduler if
- You want the apscheduler feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches Python
- You evaluated both and apscheduler fits your workflow better
About Cal.com
[!WARNING] Use at your own risk. Cal.diy is the open source community edition of Cal.com and it is intended for users who want to self host their own Cal.diy instance. It is strictly recommended for personal, non production use. Please review all installation and configuration steps carefully. Self hosting requires advanced knowledge of server administration, database management, and securing sensitive data. Proceed only if you are comfortable with these responsibilities. [!TIP] For any commercial and enterprise ready scheduling infrastructure, use Cal.com, not Cal.diy; hosted by us or get invited to on prem…
read the full Cal.com overview →
About apscheduler
.. image:: :target: :alt: Build Status .. image:: :target: :alt: Code Coverage .. image:: :target: :alt: Documentation .. warning:: The v4.0 series is provided as a pre release and may change in a backwards incompatible fashion without any migration pathway, so do NOT use this release in production! Advanced Python Scheduler (APScheduler) is a task scheduler and task queue system for Python. It can be used solely as a job queuing system if you have no need for task scheduling. It scales both up and down, and is suitable for both trivial, single process use cases as well as large deployments spanning multiple…
read the full apscheduler overview →
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Frequently asked questions
Is Cal.com or apscheduler more popular?
Cal.com has 49,651 GitHub stars and apscheduler has 7,678. Cal.com has the larger community by that measure.
Are Cal.com and apscheduler free?
Both are open source. Cal.com is licensed under MIT and apscheduler under MIT. Neither carries a licence fee.
What is the difference between Cal.com and apscheduler?
Cal.com is written in TypeScript and apscheduler 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, Cal.com or apscheduler?
Choose Cal.com if you want the larger community (49,651 stars) or its MIT licence terms. Choose apscheduler if its feature set, stack or MIT licence fits better. Both are self-hostable.