JGZimmerle: I code sites by hand using Dreamweaver on Windows. A plain text editor ... with syntax highlighting, error highlighting, validation, reference library, indentation tools, macros, gui method of setting properties and real time previewing. Oh and I can design visually if I so wish.
But where Dreamweaver really comes into its own, and what I could not live without, is the ease with which I can reverse engineer other peoples websites, which is particularly useful in creating minimal test cases of browser bugs (not exactly a common need, but it is very good for it). Of course, I could just be using !Zap or some other text editor and be beating my head against the wall in frustration.
So if you code sites by hand, there are other non RISC OS based alternatives, if you code sites visually you've no choice but to use something else.