Lightroom also stores your files in a folder structure based on year, month and day that the metadata in the images says they were taken. But when you import a day’s photo shoot it adds it to your current catalog where you can easily browse an entire day, month, year or multiple years worth of photos, so long as they were all added to the same catalog. With Darkroom every group of imported photos becomes a separate item that you can browse, but you can’t browse more days all at once that easily.

I should take another look at ART but basic Rawtherapee and Darktable both lack something in their features for storing a lifetime collection of photos. They’re pretty good at all the usual exposure/color correction features but not really a full replacement for Lightroom.