head to head · open source
Prometheus vs dejavu
Prometheus has 66,109 GitHub stars, 10,839 forks, 890 open issues and last shipped 2 days ago. dejavu has 8,467 stars, 512 forks, 69 open issues and last shipped 3 months ago. Prometheus leads on adoption by 681% (66,109 vs 8,467 stars). Prometheus is written in Go under Apache-2.0; dejavu is written in JavaScript under MIT. Prometheus has attracted 16% as many forks as stars, dejavu 6%. 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 | dejavu | |
|---|---|---|
| GitHub stars | ★ 66K | ★ 8.5K |
| License | Apache-2.0 | MIT |
| Written in | Go | JavaScript |
| Last push | 2026-09-17 | 2026-07-02 |
| Forks | ⑂ 11K | ⑂ 512 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Prometheus if
- You weight community size — 66K 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 dejavu if
- You want the dejavu feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches JavaScript
- You evaluated both and dejavu fits your workflow better
About Prometheus
Prometheus is an open source monitoring system and time series database, part of the Cloud Native Computing Foundation ecosystem. It collects metrics from configured targets at defined intervals, evaluates alerting rules, and visualizes results. Designed for reliability in dynamic environments, it operates without reliance on distributed storage, ensuring each server node functions independently.
read the full Prometheus overview →
About dejavu
Dejavu is a modern, 100% client side web UI for Elasticsearch and OpenSearch that lets developers import, browse, filter and edit index data and build faceted search UIs, aimed at engineers and operations teams who need to inspect a cluster without hand writing queries.
read the full dejavu overview →
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Frequently asked questions
Is Prometheus or dejavu more popular?
Prometheus has 66,109 GitHub stars and dejavu has 8,467. Prometheus has the larger community by that measure.
Are Prometheus and dejavu free?
Both are open source. Prometheus is licensed under Apache-2.0 and dejavu under MIT. Neither carries a licence fee.
What is the difference between Prometheus and dejavu?
Prometheus is written in Go and dejavu 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 dejavu?
Choose Prometheus if you want the larger community (66,109 stars) or its Apache-2.0 licence terms. Choose dejavu if its feature set, stack or MIT licence fits better. Both are self-hostable.