Photoshop.

UPDATE
Duplicate An Image


You can duplicate an entire image (including all layers, layer masks, and channels) into available memory without
saving to disk.
1. Open the image you want to duplicate.
2 .Choose Image > Duplicate.
3. Enter a name for the duplicated image.
4. If you want to duplicate the image and merge the layers, select Duplicate Merged Layers Only. To preserve the
layers, make sure this option is deselected.
5 .Click OK.