Word processing

Word processing developed as specialized programs on mainframe computers. The term word processing was invented by IBM in the late 1960s. By 1971 it was recognized by the New York Times as a "buzz word” who knows.

OpenOffice.org is a free office suite of applications available for many different operating systems including Linux, Microsoft Windows, Solaris and Mac OS X. It supports the OpenDocument standard for data interchange.
OpenOffice.org is based on StarOffice, an office suite developed by StarDivision and acquired by Sun Microsystems in August 1999. The source code of the suite was released in July 2000 with the aim of reducing the dominant market share of Microsoft Office by providing a free, open and high-quality alternative. OpenOffice.org is free software, available under the GNU Lesser General Public License (LGPL).

If you want to write something. what you need is...OpenOffice.org Writer which is an open source/free software word processor which is a component of the OpenOffice.org software package. Writer is a word processor similar to Microsoft Word, with a roughly equivalent range of features. It provides a number of features not present in Word, including being able to export to the PDF format natively.
As with the entire OpenOffice.org suite, Writer can be used across a variety of platforms, including Mac OS X, Windows, GNU/Linux, FreeBSD and Solaris.