GuardLabs

← All website monitoring tools

Monit logo

Monit

free From $0/mo · Founded 2001 · self-hosted

Classic Unix process + service monitor — runs locally, restarts services if they die.

What it does well

  • Extremely lightweight, with a very small memory and CPU footprint on the host.
  • Can automatically restart failed processes or services, ensuring higher availability.
  • Configuration is done via a simple, human-readable text file, enabling easy version control.

Where it falls short

  • Self-hosted only, with no official managed or SaaS version available.
  • Lacks a native, centralized view for monitoring multiple servers in one dashboard.
  • User interface is basic and dated compared to modern monitoring tools.
  • Alerting and notification options are limited without custom scripting or integration.
Tags: server-monitoringopen-sourceself-hostedfree-tier

Alternatives to Monit

Zabbix

Zabbix

free

Enterprise-grade open-source monitoring — free forever, paid support available.

CNCF metrics + alerting standard — Blackbox exporter does HTTP/TCP/ICMP probes.

Time-series storage for metrics — old-school but reliable, paired with Grafana for dashboards.

Icinga

Icinga

free

Modern Nagios fork — open source, plugin-compatible with Nagios checks.