Gimp having multiple windows is its best feature. Luckily, Photoshop on macOS (but not Windows) also has multiple windows mode (though it's emulated, they aren'

Gimp having multiple windows is its best feature. Luckily, Photoshop on macOS (but not Windows) also has multiple windows mode (though it's emulated, they aren't really operating system windows, so not as nice as Gimp).