Bare Bones Software has released version 9.2 of BBEdit, my preferred text editor on the Mac, my favorite XML editor on any platforms, what I'm using to type these very words.
New features include a BBEdit Sleep command.
"When BBEdit gets quit because of a system shutdown, restart, or user logout, it now does a 'Sleep BBEdit' in order to restore as much of the application state as possible when starting back up. (This means that you may not be prompted to save new or unsaved documents, since they will be autosaved when the application sleeps.)"
New copies cost $125. Upgrades from 9.x are free.
Mac OS X 10.4 or later is required.