head to head · open source
Prometheus vs pgrust
Prometheus has 66,906 GitHub stars, 10,969 forks, 890 open issues and last shipped yesterday. pgrust has 5,731 stars, 221 forks, 6 open issues and last shipped 8 days ago. Prometheus leads on adoption by 1,067% (66,906 vs 5,731 stars). Prometheus is written in Go under Apache-2.0; pgrust is written in Rust under AGPL-3.0. Prometheus has attracted 16% as many forks as stars, pgrust 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 | pgrust | |
|---|---|---|
| GitHub stars | ★ 67K | ★ 5.7K |
| License | Apache-2.0 | AGPL-3.0 |
| Written in | Go | Rust |
| Last push | 2026-11-02 | 2026-10-26 |
| Forks | ⑂ 11K | ⑂ 221 |
| 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 pgrust if
- You want the pgrust feature set and don't need the biggest community
- You prefer the AGPL-3.0 license terms
- Your stack matches Rust
- You evaluated both and pgrust 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 pgrust
pgrust A Rust rewrite of Postgres that's faster than Postgres and ClickHouse. Try pgrust in your browser → Discord Updates Issues New: Video of Michael's talk at PlanetScale on pgrust — and the slides. How AI Changes the Economics of JIT Compilers What's new in v0.3. pgrust is a re implementation of Postgres meant to show what Postgres would look like if it was built in 2026. It is wire compatible and even SQL dialect compatible with Postgres. It passes all 46,066 tests in Postgres' regression suite. For the story of why we're building it, see pgrust: rebuilding Postgres in Rust with AI. Every line is Rust…
read the full pgrust overview →
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Frequently asked questions
Is Prometheus or pgrust more popular?
Prometheus has 66,906 GitHub stars and pgrust has 5,731. Prometheus has the larger community by that measure.
Are Prometheus and pgrust free?
Both are open source. Prometheus is licensed under Apache-2.0 and pgrust under AGPL-3.0. Neither carries a licence fee.
What is the difference between Prometheus and pgrust?
Prometheus is written in Go and pgrust in Rust. 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 pgrust?
Choose Prometheus if you want the larger community (66,906 stars) or its Apache-2.0 licence terms. Choose pgrust if its feature set, stack or AGPL-3.0 licence fits better. Both are self-hostable.