Word Processing

Note-Taking:
Evernote: (Mac, Win)
Gournal: (Linux)
Jarnal: (Linux, Mac, Win)
Mynotex: (Linux)
Notelab: (Linux, Mac, Win)
Tomboy: (Linux)
TreeLine: Notes/Database (Linux, Win)
Xournal: PDF Annotator (Linux, Mac, Win)
Office Productivity Suites:
Apache OpenOffice: (Linux, Mac, Win)
Apache OpenOffice: Portable (Win)
AbiWord: (Linux, Mac, Win)
AbiWord: Portable (Win)
Bean: MSW Clone (Mac)
Calligra: (Linux, Mac, Win)
GnomeOffice: Suite (Linux, Mac, Win)
Joeoffice: (Mac, Linux, Win)
KOffice Suite (Linux, Mac)
LibreOffice (Linux, Mac, Win)
LibreOffice: Portable (Win)
MSWord : Free (Dos)
NeoOffice: (Mac)
OnlyOffice (Linux, Mac, Win)
Siag Office: (Linux, Mac)
WordPerfect: (Linux )
Text Editors:
Antiword: Reader (Linux, Mac, Win)
Atom: Hackable editor (Linux, Mac, Win)
Celtx: Screenwriting (Linux, Mac, Win)
BBedit (see TextWrangler): Mac
Docutils: Text Processing (Linux)
Dokuwiki: Wiki (Linux)

Text Editors:
Emacs & Aqua: (Linux, Mac, Win)
Emacs & Aqua: (Linux, Mac, Win)
Encryptpad: Secure Text (Linux, Mac, Win)
Etherpad: Web Editor (Linux, Mac, Win)
eany: Editor (Linux, Win)
GEdit: Editor (Linux)
Glipper: Clipboard (Linux)
Gmate: Editor (Linux)
Gtkedit: (Linux)
Hexeditor: Linux, Mac, Win)
JEdit: Editor (Linux, Mac, Win)
Joe's: Editor (Linux)
Kate: Editor (Linux)
Komodo: Editor (Linux, Mac, Win)
KWrite: Editor (Linux)
Leaf: Editor (Linux)
Leafpad: Editor (Linux)
Medit: Editor (Linux, Win)
Music: Notation (Linux, Mac, Win)
Nano: Editor (Linux)
Nedit: Editor (Linux)
Notepad2:Text Editor (Win)
Notepad Plus: Editor (Win)
NoteTab: HML Editor (Win)
PyRoom: Editor (Mac, Win)
SciTE: Editor (Linux, Win)
reStructuredtext: Markup Syntax (Linux)
Scribes: Gnome Editor (Linux)
Scribus: Publishing (Linux, Mac, Win)
Sed: Streams Editor (Linux)
Tea-Editor: (Linux, Win)
Ted: Editor (Linux)

Text Editors:
Ted: NotePad (Win)
Text Editors: Various (Linux, Mac, Win)
Textroom: Editor (Linux, Mac, Win)
TextWrangler: (Mac)
Tiddlywiki: Web Notebook (Linux, Mac, Win)
TinyMCE: Editor (Linux, Mac, Win)
Recode: Converter (Linux)
Vim: Editor (Linux, Mac, Win)
WordGrinder: Word Processor (Linux)
WordPress: Publishing (Linux, Win)
Writetype: Writing Made Easy (Linux, Win)
XML: Editor (Linux, Mac, Win)
XPad: Editor (Mac)
Zim : Editor (Linux, Win)
Type Setting:
AUCTeX: Typesetting (Linux, Mac, Win)
Gummi: Typesetting (Linux, Mac, Win)
Kile: Typesetting (Linux)
LaTex: Typesetting (Linux, Win)
Latex2RTF: Translator (Linux, Mac,Win)
Lyx: Typesetting (Linux, Mac, Win)
MacTex: Latex (Mac)
MiKTeX: Type Setting (Win)
TeX: Typesetting (Linux, Win)
TexMacs: Typesetting (Linux, Mac, Win)
Texmaker: Typesetting (Linux, Mac, Win)