I realize everyone has favorites and least favorites.

If you spend anytime in html you understand the importance of source view.
One can claim expertise in the format untill one has a solid grasp of source code.

As you add your favorite to the list attach a quick summary of what advantages or disadvantages it has.

Example:

Notepad
Notepad has come standard with windows since 3.1 While many users have blown it off as a non rich text document editor. Notepad devotee's are generally old school html coders. There are no wizards no color coding text and no predefined tags or wysiwyg editing. It's the acid test of how well you actually know html source code. Some hardcore html codes use nothing but notepad to format html.