TextWrangler is a super-powerful all-purpose (free) Mac text editor and UNIX server administrator's multitool. Oh, and like the best things in life? It's free. TextWrangler is a general-purpose text editor for light-duty composition, data-file editing (where the data files consist of plain [unstyled] text), and manipulation of text-oriented data. TextWrangler supports working with both plain-text and Unicode files (with the exception of files written using right-to-left writing systems, such as Hebrew or Arabic).