a WYSIWYM document editor, using LaTeX (and thus TeX) for industrial strength typesetting… http://www.lyx.org/

using Os X with aqua interface or Xwindows >

• http://wiki.lyx.org/Mac/Mac
• http://www.la.utexas.edu/~tnishino/osx_lyx/lyx_aqua.html

apt-get install lyx