Being open source, others have the possibility to modify and extend the rich functionality Frigate already offers. This page is meant to be an overview over additions one can make to the home NVR setup. The list is not exhaustive and can be extended via PR to the Frigate docs.
This page does not recommend or rate the presented projects. Please use your own knowledge to assess and vet them before you install anything on your system.
Double Take provides an unified UI and API for processing and training images for facial recognition. It supports automatically setting the sub labels in Frigate for person objects that are detected and recognized. This is a fork (with fixed errors and new features) of original Double Take project which, unfortunately, isn't being maintained by author.