Linux users whose distributions do not ship RawTherapee 5.4 can now enjoy our latest stable release by getting the RawTherapee 5.4 AppImage from our Downloads page.
An AppImage is a single file which contains all the components necessary to run a program in any Linux distribution. As some distributions provide old versions of certain programs, the AppImage is a great solution for letting users of those systems run the latest version of a given program.
All you need to do after downloading it is to make it executable and run it:
chmod +x RawTherapee-releases-5.4.AppImage
./RawTherapee-releases-5.4.AppImage