head to head · open source
kubernetes vs fission
kubernetes has 127,843 GitHub stars, 44,692 forks, 3,072 open issues and last shipped today. fission has 8,921 stars, 794 forks, 50 open issues and last shipped 5 days ago. kubernetes leads on adoption by 1,333% (127,843 vs 8,921 stars). kubernetes is written in Go under Apache-2.0; fission is written in Go under Apache-2.0. kubernetes has attracted 35% as many forks as stars, fission 9%. kubernetes was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 3 topic tags (containers, go, kubernetes), 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
| kubernetes | fission | |
|---|---|---|
| GitHub stars | ★ 128K | ★ 8.9K |
| License | Apache-2.0 | Apache-2.0 |
| Written in | Go | Go |
| Last push | 2026-09-20 | 2026-09-15 |
| Forks | ⑂ 45K | ⑂ 794 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick kubernetes if
- You weight community size — 128K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches Go
- You value the larger contributor base for long-term maintenance
pick fission if
- You want the fission 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 fission fits your workflow better
About kubernetes
Kubernetes (K8s) is an open source, Apache 2.0 licensed system for managing containerized applications across multiple hosts, hosted by the Cloud Native Computing Foundation and aimed at teams who deploy, maintain and scale container packaged and microservices oriented workloads in production.
read the full kubernetes overview →
About fission
Fission is an open source, Kubernetes native serverless framework that lets developers deploy functions triggered by HTTP requests, message queue messages, or scheduled tasks without managing the underlying infrastructure.
read the full fission overview →
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Frequently asked questions
Is kubernetes or fission more popular?
kubernetes has 127,843 GitHub stars and fission has 8,921. kubernetes has the larger community by that measure.
Are kubernetes and fission free?
Both are open source. kubernetes is licensed under Apache-2.0 and fission under Apache-2.0. Neither carries a licence fee.
What is the difference between kubernetes and fission?
kubernetes is written in Go and fission 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, kubernetes or fission?
Choose kubernetes if you want the larger community (127,843 stars) or its Apache-2.0 licence terms. Choose fission if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.