XnView MP - XnView is a free software that allows you to view, resize and edit your images. It supports more than 500 different formats!
Notabli for the Web - Childhood, privately shared & effortlessly organized
digiKam - Professional Photo Management with the Power of Open Source
Collectgram - The best way to organize and search informations about collectibles items and purchase new ones to your collections.
Photos on macOS - Photos keeps your images organized and accessible. Rediscover favorite shots with Memories. Access them on your devices with iCloud Photos.
Cluster - A beautiful and easy way to collect and view inspiration