BLOCS - Visual web design app.
Nova Code Editor - Nova Code Editor is software that is used for writing and editing codes.
AutoTrace - It is tracing program, so converts bitmap to vector graphics.
Google Web Designer - Google Web Designer is a free, professional-grade HTML5 authoring tool. Build interactive, animated HTML5 creative, no coding necessary.
Rapidweaver - A WYSIWYG web editor for mac.
Bluefish Editor - Home of the Bluefish Editor, a powerful editor targeted towards programmers and webdesigners. It supports working with local and remote files, syntax highlighting and a WYSIWYN interface.