After watching the Tools of the Trade episode I noticed most of the software cost money. This might be OK for people who make a living at this stuff but what about people who can’t afford dropping $$$ on tools.
Some tools for the mac I have fond:
Smultron â€” awesome text editor with a live preview window.
TextWrangler â€” stripped down free version of BBEdit.
Cyberduck â€” single view style FTP client (like Fetch)
Fugu â€” dual view style FTP client (like Transmit)