head to head · open source
Prometheus vs pg
Prometheus has 66,906 GitHub stars, 10,969 forks, 890 open issues and last shipped yesterday. pg has 5,778 stars, 412 forks, 124 open issues and last shipped 4 months ago. Prometheus leads on adoption by 1,058% (66,906 vs 5,778 stars). Prometheus is written in Go under Apache-2.0; pg is written in Go under BSD-2-Clause. Prometheus has attracted 16% as many forks as stars, pg 7%. 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 | pg | |
|---|---|---|
| GitHub stars | ★ 67K | ★ 5.8K |
| License | Apache-2.0 | BSD-2-Clause |
| Written in | Go | Go |
| Last push | 2026-11-02 | 2026-07-10 |
| Forks | ⑂ 11K | ⑂ 412 |
| 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 pg if
- You want the pg feature set and don't need the biggest community
- You prefer the BSD-2-Clause license terms
- Your stack matches Go
- You evaluated both and pg 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 pg
PostgreSQL client and ORM for Golang Maintenance mode go pg is in a maintenance mode and only critical issues are addressed. New development happens in Bun repo which offers similar functionality but works with PostgreSQL, MySQL, MariaDB, and SQLite. Golang ORM Documentation Reference Examples Example projects: monetr budgeting application focused on planning for recurring expenses bunrouter gin go kit aah framework Tutorials GraphQL Tutorial on YouTube. Modern API design with Golang, PostgreSQL and Docker Ecosystem Migrations by vmihailenco and robinjoseph08. Genna cli tool for generating go pg models. bigint…
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Frequently asked questions
Is Prometheus or pg more popular?
Prometheus has 66,906 GitHub stars and pg has 5,778. Prometheus has the larger community by that measure.
Are Prometheus and pg free?
Both are open source. Prometheus is licensed under Apache-2.0 and pg under BSD-2-Clause. Neither carries a licence fee.
What is the difference between Prometheus and pg?
Prometheus is written in Go and pg in Go. 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 pg?
Choose Prometheus if you want the larger community (66,906 stars) or its Apache-2.0 licence terms. Choose pg if its feature set, stack or BSD-2-Clause licence fits better. Both are self-hostable.