head to head · open source
Prometheus vs aleph
Prometheus has 66,906 GitHub stars, 10,969 forks, 890 open issues and last shipped yesterday. aleph has 2,499 stars, 369 forks, 371 open issues and last shipped 9 months ago. Prometheus leads on adoption by 2,577% (66,906 vs 2,499 stars). Prometheus is written in Go under Apache-2.0; aleph is written in JavaScript under MIT. Prometheus has attracted 16% as many forks as stars, aleph 15%. 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 | aleph | |
|---|---|---|
| GitHub stars | ★ 67K | ★ 2.5K |
| License | Apache-2.0 | MIT |
| Written in | Go | JavaScript |
| Last push | 2026-11-02 | 2026-02-20 |
| Forks | ⑂ 11K | ⑂ 369 |
| 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 aleph if
- You want the aleph feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches JavaScript
- You evaluated both and aleph 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 aleph
.. epigraph:: Truth cannot penetrate a closed mind. If all places in the universe are in the Aleph, then all stars, all lamps, all sources of light are in it, too. The Aleph , Jorge Luis Borges :warning: PROJECT STATUS: SUNSETTING :warning: Our involvement with this open source project is being sunsetted. Maintenance of this version will officially end after December 2025. Why? This decision marks a significant strategic shift for us. Over the past year, our team has completely rewritten the Aleph codebase from scratch to launch Aleph Pro. As we transition to this new supported platform, we are focusing our…
read the full aleph overview →
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Frequently asked questions
Is Prometheus or aleph more popular?
Prometheus has 66,906 GitHub stars and aleph has 2,499. Prometheus has the larger community by that measure.
Are Prometheus and aleph free?
Both are open source. Prometheus is licensed under Apache-2.0 and aleph under MIT. Neither carries a licence fee.
What is the difference between Prometheus and aleph?
Prometheus is written in Go and aleph 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, Prometheus or aleph?
Choose Prometheus if you want the larger community (66,906 stars) or its Apache-2.0 licence terms. Choose aleph if its feature set, stack or MIT licence fits better. Both are self-hostable.