head to head · open source
cloudstack vs one
cloudstack has 3,075 GitHub stars, 1,385 forks, 1,048 open issues and last shipped yesterday. one has 1,745 stars, 533 forks, 771 open issues and last shipped 2 days ago. cloudstack leads on adoption by 76% (3,075 vs 1,745 stars). cloudstack is written in Java under Apache-2.0; one is written in JavaScript under Apache-2.0. cloudstack has attracted 45% as many forks as stars, one 31%. cloudstack was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 5 topic tags (cloud, kvm, orchestration, virtual-machine), 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
| cloudstack | one | |
|---|---|---|
| GitHub stars | ★ 3.1K | ★ 1.7K |
| License | Apache-2.0 | Apache-2.0 |
| Written in | Java | JavaScript |
| Last push | 2026-09-19 | 2026-09-18 |
| Forks | ⑂ 1.4K | ⑂ 533 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick cloudstack if
- You weight community size — 3.1K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches Java
- You value the larger contributor base for long-term maintenance
pick one if
- You want the one feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches JavaScript
- You evaluated both and one fits your workflow better
About cloudstack
Apache CloudStack is an open source Infrastructure as a Service (IaaS) cloud computing platform, written primarily in Java and released under the Apache 2.0 licence, that deploys and manages large networks of virtual machines for service providers, enterprises, and operators who need a cloud they control.
read the full cloudstack overview →
About one
OpenNebula is an open source cloud management platform, licensed under Apache 2.0, for building and operating private clouds, edge infrastructures, distributed cloud deployments, and AI Factories.
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Frequently asked questions
Is cloudstack or one more popular?
cloudstack has 3,075 GitHub stars and one has 1,745. cloudstack has the larger community by that measure.
Are cloudstack and one free?
Both are open source. cloudstack is licensed under Apache-2.0 and one under Apache-2.0. Neither carries a licence fee.
What is the difference between cloudstack and one?
cloudstack is written in Java and one in JavaScript. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, cloudstack or one?
Choose cloudstack if you want the larger community (3,075 stars) or its Apache-2.0 licence terms. Choose one if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.