Yes, it is. Terrains are represented by 2D grey-scale images, so called height-maps. These can be exported by World Creator and imported into other applications, such as Cinema4D, Vue, Octane, Clarisse, Terragen, Substance, Houdini, 3DS Max, Maya, Photoshop and more. The same approach also works for texturing / coloring and even for objects and details - World Creator let's you export everything required, to fully recreate the entire terrain in another applications or game.