head to head · open source
Prometheus vs acl
Prometheus has 66,906 GitHub stars, 10,969 forks, 890 open issues and last shipped yesterday. acl has 3,106 stars, 947 forks, 40 open issues and last shipped 22 days ago. Prometheus leads on adoption by 2,054% (66,906 vs 3,106 stars). Prometheus is written in Go under Apache-2.0; acl is written in C under LGPL-2.1. Prometheus has attracted 16% as many forks as stars, acl 30%. 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.
← all 20902 open source comparisons
Side by side
| Prometheus | acl | |
|---|---|---|
| GitHub stars | ★ 67K | ★ 3.1K |
| License | Apache-2.0 | LGPL-2.1 |
| Written in | Go | C |
| Last push | 2026-11-02 | 2026-10-12 |
| Forks | ⑂ 11K | ⑂ 947 |
| 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 acl if
- You want the acl feature set and don't need the biggest community
- You prefer the LGPL-2.1 license terms
- Your stack matches C
- You evaluated both and acl 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 acl
中文 Acl Advanced Cross Platform C/C++ Network Communication Library and Server Framework 0. About Acl Project Acl (Advanced C/C++ Library) is a powerful cross platform network communication library and server programming framework that supports Linux, Windows, Solaris, FreeBSD, macOS, Android, iOS, and HarmonyOS. Numerous applications developed with Acl run on various devices, providing stable and reliable services to hundreds of millions of users. The Acl project includes a rich set of functional modules: network communication, server framework, application protocols, various codecs, and more. It has built in…
More in Infrastructure & Operations
Related comparisons
More Databases projects
Compare either of these against the rest of the Databases field.
Frequently asked questions
Is Prometheus or acl more popular?
Prometheus has 66,906 GitHub stars and acl has 3,106. Prometheus has the larger community by that measure.
Are Prometheus and acl free?
Both are open source. Prometheus is licensed under Apache-2.0 and acl under LGPL-2.1. Neither carries a licence fee.
What is the difference between Prometheus and acl?
Prometheus is written in Go and acl in C. 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 acl?
Choose Prometheus if you want the larger community (66,906 stars) or its Apache-2.0 licence terms. Choose acl if its feature set, stack or LGPL-2.1 licence fits better. Both are self-hostable.