My tools (although I am mostly a web developer, not a web designer): PHP Designer 7 (my PHP IDE of choice), Eclipse JS (my Javascript IDE of choice), jQuery, Visual Studio 2010 Professional (my C#/ASP.NET MVC IDE of choice), and each browser's JS debugging tools. These are the tools that I use constantly while developing.
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My tools (although I am mostly a web developer, not a web designer): PHP Designer 7 (my PHP IDE of choice), Eclipse JS (my Javascript IDE of choice), jQuery, Visual Studio 2010 Professional (my C#/ASP.NET MVC IDE of choice), and each browser's JS debugging tools. These are the tools that I use constantly while developing.