head to head · open source
Prometheus vs ubicloud
Prometheus has 66,906 GitHub stars, 10,969 forks, 890 open issues and last shipped yesterday. ubicloud has 12,381 stars, 602 forks, 95 open issues and last shipped yesterday. Prometheus leads on adoption by 440% (66,906 vs 12,381 stars). Prometheus is written in Go under Apache-2.0; ubicloud is written in Ruby under AGPL-3.0. Prometheus has attracted 16% as many forks as stars, ubicloud 5%. Prometheus 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
| Prometheus | ubicloud | |
|---|---|---|
| GitHub stars | ★ 67K | ★ 12K |
| License | Apache-2.0 | AGPL-3.0 |
| Written in | Go | Ruby |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 11K | ⑂ 602 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Prometheus if
- You weight community size — 67K 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 ubicloud if
- You want the ubicloud feature set and don't need the biggest community
- You prefer the AGPL-3.0 license terms
- Your stack matches Ruby
- You evaluated both and ubicloud fits your workflow better
About Prometheus
Prometheus Visit prometheus.io for the full documentation, examples and guides. [ ][quay] [ ][hub] Prometheus, a Cloud Native Computing Foundation project, is a systems and service monitoring system. It collects metrics from configured targets at given intervals, evaluates rule expressions, displays the results, and can trigger alerts when specified conditions are observed. The features that distinguish Prometheus from other metrics and monitoring systems are: A multi dimensional data model (time series defined by metric name and set of key/value dimensions) PromQL, a powerful and flexible query language to…
read the full Prometheus overview →
About ubicloud
Ubicloud Ubicloud is an open source cloud that can run anywhere. Think of it as an open alternative to cloud providers, like what Linux is to proprietary operating systems. Ubicloud provides IaaS cloud features on bare metal providers, such as Hetzner, Leaseweb, and AWS Bare Metal. You can set it up yourself on these providers or you can use our managed service. Quick start Managed platform You can use Ubicloud without installing anything. When you do this, we pass along the underlying provider's benefits to you, such as price or location. Build your own cloud You can also build your own cloud. To do this, start…
read the full ubicloud overview →
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Frequently asked questions
Is Prometheus or ubicloud more popular?
Prometheus has 66,906 GitHub stars and ubicloud has 12,381. Prometheus has the larger community by that measure.
Are Prometheus and ubicloud free?
Both are open source. Prometheus is licensed under Apache-2.0 and ubicloud under AGPL-3.0. Neither carries a licence fee.
What is the difference between Prometheus and ubicloud?
Prometheus is written in Go and ubicloud in Ruby. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Prometheus or ubicloud?
Choose Prometheus if you want the larger community (66,906 stars) or its Apache-2.0 licence terms. Choose ubicloud if its feature set, stack or AGPL-3.0 licence fits better. Both are self-hostable.