Open source web design toolsets

Question

I'm looking for recommendations on an open source toolset for WYSIWYG HTML/CSS design. What you have you found to be valuable in your work?

Answer 1

Windows

• Web Applications - Microsoft Visual Web Developer Express 2010 (Not Open Source, but powerful for large applications)
• Web-Sites and Microsites - Intype + FileZilla (Not Open Source, but faster alternatives)
• Notepad++ is a quick alternative too, that has various plugins (like FTP, [Open Source])

Mac

• TextMate & Coda (I hear these are cool and sleak)

Answer 2

I briefly used Bluefish while in college, which has similar features to Dreamweaver.

Wikipedia has a good list here.

Answer 3

http://stackoverflow.com/questions/2719494/dreamweaver-equivalent-for-linux/2719520#2719520

asked a similar question and my answer is still the same, aptana is cross platform. Also please note the concept that WSYWIG is not generally what you get, you may also want to look into jsfiddle.net as it is a great tool for testing concepts in a functional environment.