OpenOffice.org
OpenOffice.org 3 is the leading open-source office software suite for word processing, spreadsheets, presentations, graphics, databases and more.
OOExtras
OpenOffice.org is a fantastic suite of office productivity software which runs on Linux and Windows.
OOo Label Templates
Free blank ODF label templates for Openoffice.org.
AbiWord
Like most Open Source projects, AbiWord started as a cathedral, but has become more like a bazaar.
PDFCreator
PDFCreator is a free tool to create PDF files from nearly any Windows application.
qvPDF
qvPDF is a PDF creator for Windows.
pdftk
Pdftk allows you to manipulate PDF easily and freely.
PDFsam
pdfsam is an open source tool (GPL license) designed to handle pdf files.
Xpdf
Xpdf is an open source viewer for Portable Document Format (PDF) files.
PDFTOHTML
pdftohtml is a utility which converts PDF files into HTML and XML formats.
LyX
LyX is a document processor that encourages an approach to writing based on the structure of your documents (WYSIWYM) and not simply their appearance (WYSIWYG).
VIM-LaTeX
WinDjView
WinDjView is a fast, compact and powerful DjVu viewer for Windows with tabbed interface, continuous scrolling and advanced printing options.
GanttProject
GanttProject is a cross-platform desktop tool for project scheduling and management.
Open Workbench
Open Workbench is an open source desktop application that provides robust project scheduling and management functionality.
Scribus
Scribus is an open-source program that brings professional page layout to Linux/Unix, MacOS X, OS/2 and Windows.Scribus supports professional features, such as CMYK color, spot color, separations, ICC color and robust commercial grade PDF.
Gnumeric
The Gnumeric spreadsheet is part of the GNOME desktop environment: a project to create a free, user friendly desktop environment.
GnomeOffice
There are a bunch of GNOME/Gtk applications that are useful in an office enviroment.
PowerTalk
PowerTalk is a free program that automatically speaks any presentation or slide show running in Microsoft PowerPoint for Windows.
MathCast
MathCast is an equation editor, an application that allows you to input mathematical equations.
MiKTeX
TeXnicCenter
TeXnicCenter is a feature rich and easy-to-use integrated environment for creating LaTeX documents on the Windows platform.
proTeXt
proTeXt aims to be an easy-to-install TeX distribution for Windows, based on MiKTeX.