head to head · open source
Prometheus vs FlyEnv
Prometheus has 66,109 GitHub stars, 10,839 forks, 890 open issues and last shipped 2 days ago. FlyEnv has 3,234 stars, 371 forks, 37 open issues and last shipped 3 days ago. Prometheus leads on adoption by 1,944% (66,109 vs 3,234 stars). Prometheus is written in Go under Apache-2.0; FlyEnv is written in TypeScript under BSD-3-Clause. Prometheus has attracted 16% as many forks as stars, FlyEnv 11%. 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 | FlyEnv | |
|---|---|---|
| GitHub stars | ★ 66K | ★ 3.2K |
| License | Apache-2.0 | BSD-3-Clause |
| Written in | Go | TypeScript |
| Last push | 2026-09-17 | 2026-09-16 |
| Forks | ⑂ 11K | ⑂ 371 |
| 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 FlyEnv if
- You want the FlyEnv feature set and don't need the biggest community
- You prefer the BSD-3-Clause license terms
- Your stack matches TypeScript
- You evaluated both and FlyEnv 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 FlyEnv
FlyEnv is a native, cross platform desktop application that installs and manages a complete local development stack — language runtimes, databases, web servers, local sites with HTTPS, and AI coding tools — directly on Windows, macOS, and Linux, for developers who want a working local environment without container orchestration.
read the full FlyEnv overview →
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Frequently asked questions
Is Prometheus or FlyEnv more popular?
Prometheus has 66,109 GitHub stars and FlyEnv has 3,234. Prometheus has the larger community by that measure.
Are Prometheus and FlyEnv free?
Both are open source. Prometheus is licensed under Apache-2.0 and FlyEnv under BSD-3-Clause. Neither carries a licence fee.
What is the difference between Prometheus and FlyEnv?
Prometheus is written in Go and FlyEnv in TypeScript. 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 FlyEnv?
Choose Prometheus if you want the larger community (66,109 stars) or its Apache-2.0 licence terms. Choose FlyEnv if its feature set, stack or BSD-3-Clause licence fits better. Both are self-hostable.