There are different categories of coders and there is a best text editor for each category of coder: cross-platform, Mac-only.
BBEdit
Saying Goodbye to Dropbox: BBEdit crashes on launch
When you rip Dropbox out, one must be careful to undo the special setups you might have put in along the way.
Textile Editing on OS X: BBEdit, iTextile, MarkMyWords
So for non-programmers, here's how to get Textile editing working on BBEdit. Review of other OS X textile solutions.
