This is a simple http check plugin, it does not have all the features of the ruby version.

http check with json parsing

Alert on the status of 3rd party resources you use that have https://www.atlassian.com/software/statuspage setup.

An Alternet version of http-pref written in go

A Hacked up tool, to find slow responding queries, provide a count of them, and log to graylog

Check the health of your weaviate cluster

A Simple Websocket Check

sensu plugin for metrics on zcards