head to head · open source
Prometheus vs Orama
Prometheus has 66,106 GitHub stars, 10,840 forks, 890 open issues and last shipped yesterday. Orama has 10,555 stars, 402 forks, 23 open issues and last shipped 7 days ago. Prometheus leads on adoption by 526% (66,106 vs 10,555 stars). Prometheus is written in Go under Apache-2.0; Orama is written in TypeScript under a custom or non-standard licence. Prometheus has attracted 16% as many forks as stars, Orama 4%. 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 | Orama | |
|---|---|---|
| GitHub stars | ★ 66K | ★ 11K |
| License | Apache-2.0 | Custom / other |
| Written in | Go | TypeScript |
| Last push | 2026-09-17 | 2026-09-11 |
| Forks | ⑂ 11K | ⑂ 402 |
| 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 Orama if
- You want the Orama feature set and don't need the biggest community
- You prefer the Custom / other license terms
- Your stack matches TypeScript
- You evaluated both and Orama 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 Orama
Orama is a search engine and RAG pipeline written in TypeScript and distributed as an npm package. It can run in a browser, on a server, or on an edge network, and it provides full text, vector, and hybrid search in a package described as less than 2kb. The project lives in the JavaScript and Node ecosystem, and it is categorized as infrastructure and operations database software.
read the full Orama overview →
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Frequently asked questions
Is Prometheus or Orama more popular?
Prometheus has 66,106 GitHub stars and Orama has 10,555. Prometheus has the larger community by that measure.
Are Prometheus and Orama free?
Both are open source. Prometheus is licensed under Apache-2.0, and Orama has no licence declared in this registry. Both are free to self-host.
What is the difference between Prometheus and Orama?
Prometheus is written in Go and Orama in TypeScript. 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 Orama?
Choose Prometheus if you want the larger community (66,106 stars) or its Apache-2.0 licence terms. Choose Orama if its feature set, stack or Custom / other licence fits better. Both are self-hostable.