Photo Collection Management
Rapid-Photo-Downloader (license GPLv3, http://www.damonlynch.net/rapid) is a great tool to download files from e.g. a SDCard or to take an existing photo folder and let the tool sort your collection, I like a folder structure like /YEAR/MONTH and splitted into a photo and video folder. Rapid-Photo-Downloader switched from Gtk to Qt, personally I think with this switch the app looks so much better and now finally it does run natively on Wayland. You can install it from AUR (sadly Arch Linux is still shipping the outdated package by default):
sudo pacman -Sy rapid-photo-downloader
The only missing functionality is from my point of view that photos are at the moment not deleted from the source after they have been copied to the destination.
DigiKam (license GPL) is a Photo powerful album software and it works well Wayland.
sudo pacman -Sy digikam
Krita (license GPLv3) is a drawing and image creation suite. It doesn’t yet run on Wayland, it only runs through XWayland.
sudo pacman -Sy krita