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Re:Quick tip for developers who use OS X by tvon on Monday January 13, 2014 @12:22PM (#7051930)
http://tiswww.case.edu/php/chet/readline/readline.html

These work in most GUI inputs as well.

Re:Quick tip for developers who use OS X by Someone on Monday January 13, 2014 @04:23PM (#7053422)
Mac OS X uses libedit (http://thrysoee.dk/editline/, http://www.opensource.apple.com/source/libedit/libedit-39/), not GNU readline.

But yes, the keybindings work in Cocoa text controls, too, for example in TextEdit, in the Safari URL/search control, etc.