Adobe Photoshop is a photo-editing program that doesn't need much introduction. Even many non-photographers have heard about it. With regard to photo-editing and image manipulation, you can achieve practically anything in Photoshop.
I apply most of my color corrections in Adobe Lightroom, but the finishing touches are usually in Photoshop. There are many things which Lightroom cannot do, for example, adding text. I also find Photoshop more efficient at such tasks as e.g. dust spot removal.
As a matter of fact, all color corrections that Lightroom is capable of, are also available in Photoshop from the Camera Raw Filter menu. However, I find the interface of Camera Raw not as convenient as the one in Lightroom.
Below are some of my images edited in Adobe Photoshop.