Write your doc in simple text files with markdown syntax.
Build a PDF book and even print it, an eBook or a clean website.
Nobody can beats LaTeX. Your book can be LaTeX then PDF and be printed or read on a screen.
Your book can be nice on a Kindle or any other eReader.
Your prose is plain old text, easily handled by any versioning tool, git, svn or even cvs.
Choose your weapon, TextWrangler, TextMate, Vim, Emacs, Bean, it's your choice.
You can download this project in either
You can also clone the project with Git
$ git clone git://github.com/athoune/BookOfMark