OSX comes with apple works and a text editor, called text edit. Apple works comes with a word processor, spread sheet, data base, paint package, presentation package and a very simple technical drawing package. They are basic, but they do work.
You can download several word processors, mariner write 3.6, nisus writer express 1.1.2 , think free write 2.2 and open office writer 1. 0.3. probably the best ulysses 1.0.3.