head to head · open source
Prometheus vs postgrest
Prometheus has 66,109 GitHub stars, 10,839 forks, 890 open issues and last shipped 2 days ago. postgrest has 27,670 stars, 1,229 forks, 400 open issues and last shipped 2 days ago. Prometheus leads on adoption by 139% (66,109 vs 27,670 stars). Prometheus is written in Go under Apache-2.0; postgrest is written in Haskell under MIT. Prometheus has attracted 16% as many forks as stars, postgrest 4%. postgrest 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 | postgrest | |
|---|---|---|
| GitHub stars | ★ 66K | ★ 28K |
| License | Apache-2.0 | MIT |
| Written in | Go | Haskell |
| Last push | 2026-09-17 | 2026-09-17 |
| Forks | ⑂ 11K | ⑂ 1.2K |
| 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 postgrest if
- You want the postgrest feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches Haskell
- You evaluated both and postgrest 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 postgrest
PostgREST is a Haskell written server that serves a fully RESTful API from any existing PostgreSQL database, and it is aimed at developers, database administrators, and operators who want a standards compliant HTTP API without writing and maintaining one from scratch.
read the full postgrest overview →
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Frequently asked questions
Is Prometheus or postgrest more popular?
Prometheus has 66,109 GitHub stars and postgrest has 27,670. Prometheus has the larger community by that measure.
Are Prometheus and postgrest free?
Both are open source. Prometheus is licensed under Apache-2.0 and postgrest under MIT. Neither carries a licence fee.
What is the difference between Prometheus and postgrest?
Prometheus is written in Go and postgrest in Haskell. 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 postgrest?
Choose Prometheus if you want the larger community (66,109 stars) or its Apache-2.0 licence terms. Choose postgrest if its feature set, stack or MIT licence fits better. Both are self-hostable.