is a free word processing program similar to Microsoft® Word. It is suitable for typing papers, letters, reports, memos, and so forth.
OS Win: 9x/ME/NT/2K/XP/2K3

EditPad Lite is a convenient, carefully designed text editor and Notepad replacement.
OS Win: 98/ME/NT/2K/XP/Vista

Ultra-Pad! - Is A Cool Advanced Skinnable Word ProcessorApplication For Windows 95 and later..

editors pick
OpenOffice.org is an Open Source, community-developed, multiplatform office-productivity suite. It includes the key desktop applications, such as a word processor, spreadsheet, presentation manager, and drawing program, with a user interface and feature set similar to other office suites.

is a virtual index card program for writers. It can be used to organize research papers, articles, fiction, non-fiction, books and whatever related to writing.