Sign up and sign-in forms come in many different shapes and sizes. A good registration form is absolute, and collected, however a great sign-up and sign-in pages are clean and offers a creative edge that forces you to take a second glance at the design. In this web design showcase, you’ll be seeing some fantastic sign-up and sign-in forms from various websites. They all exhibit usability qualities, and also have the subtle details that make a form exceptional.