Today, Adobe Photoshop is 21 years old. Photoshop has remained successful for the whole 20 years. It started as a black and white image editing program and now it has grown to a multi-product franchise with many different products in the Adobe family. As the years have progress Photoshop has develop new features with every new release and each time the interface get even better and more refined. Over at the photoshopuser.com you can find details of an event which will take place to pay homage to this program. I believe Adobe are putting on an event to celebrate the 20 years since the first release of Photoshop 1.0.