head to head · open source
Prometheus vs finagle
Prometheus has 66,906 GitHub stars, 10,969 forks, 890 open issues and last shipped yesterday. finagle has 8,869 stars, 1,426 forks, 65 open issues and last shipped 3 months ago. Prometheus leads on adoption by 654% (66,906 vs 8,869 stars). Prometheus is written in Go under Apache-2.0; finagle is written in Scala under Apache-2.0. Prometheus has attracted 16% as many forks as stars, finagle 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 | finagle | |
|---|---|---|
| GitHub stars | ★ 67K | ★ 8.9K |
| License | Apache-2.0 | Apache-2.0 |
| Written in | Go | Scala |
| Last push | 2026-11-02 | 2026-08-13 |
| Forks | ⑂ 11K | ⑂ 1.4K |
| 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 finagle if
- You want the finagle feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Scala
- You evaluated both and finagle 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 finagle
Finagle Status This project is used in production at Twitter (and many other organizations), and is being actively developed and maintained. Releases Releases are done on an approximately monthly schedule. While semver is not followed, the changelogs are detailed and include sections on public API breaks and changes in runtime behavior. Getting involved Website: Source: Mailing List: finaglers@googlegroups.com Chat: Blog: Finagle is an extensible RPC system for the JVM, used to construct high concurrency servers. Finagle implements uniform client and server APIs for several protocols, and is designed for high…
read the full finagle overview →
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Frequently asked questions
Is Prometheus or finagle more popular?
Prometheus has 66,906 GitHub stars and finagle has 8,869. Prometheus has the larger community by that measure.
Are Prometheus and finagle free?
Both are open source. Prometheus is licensed under Apache-2.0 and finagle under Apache-2.0. Neither carries a licence fee.
What is the difference between Prometheus and finagle?
Prometheus is written in Go and finagle in Scala. 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 finagle?
Choose Prometheus if you want the larger community (66,906 stars) or its Apache-2.0 licence terms. Choose finagle if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.