SHSelfHostIndex
MO

Monika

Synthetic monitoring with HTTP probes from config

Monitoring & Status ★ 628 stars Easy setup Apache-2.0

Monika is a free and open-source synthetic monitoring tool that runs HTTP probes defined in a configuration file and alerts on failures. It checks uptime, response times, and assertions.

Official siteSource code

Key features

  • Config-driven probes
  • Response assertions
  • Many alert channels
  • Synthetic monitoring

Strengths

  • Released under the Apache-2.0 license
  • Easy to set up — beginner-friendly
  • First-class Docker support for quick deployment
  • Written in TypeScript

Is Monika secure?

OSV.dev has no published security advisories for Monika's repository. No known vulnerabilities is not proof of security: it means none have been publicly catalogued.

Source: OSV.dev, checked 2026-10-14. How this is measured.

Monika replaces

Self-hosted Pingdom alternativesSelf-hosted Datadog Synthetics alternatives

Health badge

Maintain Monika? Add its health score to your README. The badge links back to this page.

SelfHostIndex: 65 · good

Markdown
[![SelfHostIndex health score for Monika](https://selfhostindex.com/badge/monika.svg)](https://selfhostindex.com/app/monika/)
HTML
<a href="https://selfhostindex.com/app/monika/"><img src="https://selfhostindex.com/badge/monika.svg" alt="SelfHostIndex health score for Monika"></a>
reStructuredText
.. image:: https://selfhostindex.com/badge/monika.svg
   :alt: SelfHostIndex health score for Monika
   :target: https://selfhostindex.com/app/monika/

The score is recomputed on every nightly rebuild from public repository data — see how it is calculated.

Compare Monika

13 head-to-head comparisons.

Similar monitoring & status apps