> For the complete documentation index, see [llms.txt](https://docs.hydrozen.io/overview/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.hydrozen.io/overview/monitors/monitor-types.md).

# Monitor Types

* Website monitor
* API monitor
* Server monitor
* Port monitor
* Heartbeat / Cron monitor
* Domain expiry monitor
* Certificate expiry monitor (SSL/TLS)