head to head · open source
apscheduler vs koordinator
apscheduler has 7,630 GitHub stars, 784 forks, 53 open issues and last shipped 8 days ago. koordinator has 1,757 stars, 480 forks, 228 open issues and last shipped 3 days ago. apscheduler leads on adoption by 334% (7,630 vs 1,757 stars). apscheduler is written in Python under MIT; koordinator is written in Go under Apache-2.0. apscheduler has attracted 10% as many forks as stars, koordinator 27%. koordinator 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
| apscheduler | koordinator | |
|---|---|---|
| GitHub stars | ★ 7.6K | ★ 1.8K |
| License | MIT | Apache-2.0 |
| Written in | Python | Go |
| Last push | 2026-09-10 | 2026-09-15 |
| Forks | ⑂ 784 | ⑂ 480 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick apscheduler if
- You weight community size — 7.6K stars and counting
- You want the MIT license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick koordinator if
- You want the koordinator feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Go
- You evaluated both and koordinator fits your workflow better
About apscheduler
APScheduler is an MIT licensed Python library that provides task scheduling and job queuing, scaling from a single process script to multi node deployments that share a persistent data store.
read the full apscheduler overview →
About koordinator
Koordinator is an Apache 2.0 licensed scheduling system written in Go for Kubernetes. It is positioned as a QoS based scheduling system for hybrid orchestration workloads, including microservices, web services, big data jobs, and AI jobs. The project lives in the cloud native Kubernetes ecosystem and is described through topics such as colocation, cost optimization, scheduling, and workload consolidation. The public repository reports 1,754 stars, 479 forks, 228 open issues, and a last push date of 2026 09 15.
read the full koordinator overview →
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Frequently asked questions
Is apscheduler or koordinator more popular?
apscheduler has 7,630 GitHub stars and koordinator has 1,757. apscheduler has the larger community by that measure.
Are apscheduler and koordinator free?
Both are open source. apscheduler is licensed under MIT and koordinator under Apache-2.0. Neither carries a licence fee.
What is the difference between apscheduler and koordinator?
apscheduler is written in Python and koordinator in Go. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, apscheduler or koordinator?
Choose apscheduler if you want the larger community (7,630 stars) or its MIT licence terms. Choose koordinator if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.