head to head · open source
Prometheus vs flyway
Prometheus has 66,109 GitHub stars, 10,839 forks, 890 open issues and last shipped yesterday. flyway has 10,092 stars, 1,631 forks, 258 open issues and last shipped 3 days ago. Prometheus leads on adoption by 555% (66,109 vs 10,092 stars). Prometheus is written in Go under Apache-2.0; flyway is written in Java under Apache-2.0. Prometheus has attracted 16% as many forks as stars, flyway 16%. 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 | flyway | |
|---|---|---|
| GitHub stars | ★ 66K | ★ 10K |
| License | Apache-2.0 | Apache-2.0 |
| Written in | Go | Java |
| Last push | 2026-09-17 | 2026-09-15 |
| Forks | ⑂ 11K | ⑂ 1.6K |
| 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 flyway if
- You want the flyway feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Java
- You evaluated both and flyway 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 flyway
Flyway is an Apache 2.0 licensed, Java based database migration tool maintained by Redgate that evolves a database schema easily and reliably across all instances, built for developers and database administrators who apply schema changes as part of a build, deploy, or manual migration workflow.
read the full flyway overview →
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Frequently asked questions
Is Prometheus or flyway more popular?
Prometheus has 66,109 GitHub stars and flyway has 10,092. Prometheus has the larger community by that measure.
Are Prometheus and flyway free?
Both are open source. Prometheus is licensed under Apache-2.0 and flyway under Apache-2.0. Neither carries a licence fee.
What is the difference between Prometheus and flyway?
Prometheus is written in Go and flyway in Java. 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 flyway?
Choose Prometheus if you want the larger community (66,109 stars) or its Apache-2.0 licence terms. Choose flyway if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.