This cool and simple UK web project, called THE BIKE, offers one tools to design a frame with your own numbers for cross sectional width, height and thickness for the tubing. Then you take it to the next level where it shows you how it performed in bending tests. A database of materials helps you compare these numbers. Awesome I think, even though it doesn't make up for all types of materials used today. I like the material database feature. It gives you a quick glance at the properties of today's frames materials. As an engineer, I savor this information!