mtail vs Prometheus

A side-by-side comparison of two self-hosted monitoring & status options — licensing, setup difficulty, resource needs, and what each one replaces.

Not the right match-up?
FeaturemtailPrometheus
CategoryMonitoring & StatusMonitoring & Status
LicenseApache-2.0Apache-2.0
LanguageGoGo
Setup difficultyMediumMedium
Min. RAM64 MB512 MB
Deploymentdocker, binary, kubernetesdocker, binary, helm
GitHub stars★ 4,024★ 65,616
First released20152015
ReplacesSplunk, Datadog Log MetricsDatadog

Why pick each one

Choose mtail if…

  • Bridges legacy logs to metrics
  • Tiny footprint
mtail details

Choose Prometheus if…

  • Powerful query language
  • Reliable and scalable
  • Huge ecosystem
Prometheus details

Frequently asked questions

Is mtail or Prometheus better?

Neither is universally better. Prometheus has the larger community; both share a medium setup difficulty, so the decision comes down to features and licensing.

Are mtail and Prometheus free and open-source?

Yes. mtail is licensed under Apache-2.0 and Prometheus under Apache-2.0. Both can be self-hosted at no software cost.

Can I run mtail and Prometheus with Docker?

mtail: yes. Prometheus: yes.

Related comparisons