LyX is an almost WYSIWYG-frontend for LaTeX. It makes the power and
typesetting quality of LaTeX available for people who are used to
word processors. Since LyX supports LaTeX's concept of general
mark-ups, it is even easier and faster to create professional quality
documents with it than with usual word processors. It is also
possible to use LaTeX commands within LyX, so nothing of LaTeX's
power is lost.