I've used Photoshop quite a bit in the past, and I got used to its keyboard shortcuts. Now when I use GIMP (GNU Image Manipulation Program), I often find myself trying to use Photoshop keyboard shortcuts, and failing, because these are different in GIMP.
To make the transition easier, one could manually edit the keyboard shortcuts in GIMP to make them more close to those used in Photoshop (there's a handy keyboard shortcuts editor in GIMP, available via
Edit -> Keyboard Shortcuts), but that's a very tedious task, so I searched for an alternative, and I came across the GimpPs project.GimpPs is a project to make GIMP more like Photoshop. It was created for the old GIMP 2.8, and it includes Photoshop keyboard shortcuts, a Photoshop-like GIMP icon theme, and a Photoshop-like layout. It appears the Photoshop icon theme doesn't work with the recent GIMP 2.10 (and the installation script doesn't work with the latest GIMP due to the configuration directory being changed), but that wasn't a problem for me as I was only interested in the pre-defined Photoshop-like keyboard shortcuts for GIMP, which still works with GIMP 2.10.
For those who are used to the Photoshop keyboard shortcuts and want to use them in GIMP, I'll explain how to install this in GIMP 2.10 on Linux (installed using a regular GIMP package, Flatpak or Snap packages), Windows or macOS. Note that this will replace any keyboard shortcuts you may have previously changed.