The TA-metricator-hec-for-nmon is the HEC version of the Technical Addon for the Metricator application for Nmon by Octamis: 

Application: https://splunkbase.splunk.com/app/3947
Support Addon: https://splunkbase.splunk.com/app/3949
ITSI module: https://splunkbase.splunk.com/app/4123

Unlike the regular TA-metricator-for-nmon, the HEC version is compatible with any version of Splunk 6.x and Splunk 7.x, and uses the HTTP Event Collector to stream metrics to Splunk 7.x indexers.

FREE TO USE: the application is now FULLY free to use without any kind of limitations.

See details page for Bitbucket repository location, and opening issues.

METRICS ON STEROIDS USING SPLUNK 7 METRIC STORE

The Metricator App fully implements Splunk time series metrics ingested within the metric store indexes.
We bring you one of the most performer user experience on Splunk Enterprise.

QUALIFIED, LOW FOOTPRINT AND HIGHLY CONFIGURABLE