If you like the menu of Photoshop and you use open source alternative GIMP, the program that combines GIMP functionalities but with “Photoshop like” menu is GIMPshop. Or simply if you want a free program that has the same look and feel with Adobe Photoshop, this application is designed to do that. Is based on GIMP application, but with menu modified.
This program supports all plugins made for GIMP.