Syncthing: backup your phone pictures
My phone has (for all intents and purposes) fully replaced my DSLR, however this poses the question of how to back them up and share them with the rest of the rest of the household. One solution is of course to just enable the cloud storage of choice (Google Photos, Apple iCloud, etc) and for some time I relied on my old, trusty Flickr Pro account with its 1Tb of storage and the automated sync. With Flickr having gone through a few acquisitions I am becoming more and more concerned about whether the sync will keep working and how well. Also, I wanted something that I could run on my home PC (a Mac Mini).