OpenOffice.org 3 is the leading open-source office software suite for word processing, spreadsheets, presentations, graphics, databases and more. It is available in many languages and works on all common computers. It stores all your data in an international open standard format and can also read and write files from other common office software packages (i.e. MS Office). It can be downloaded and used completely free of charge for any purpose.

GIMP is an acronym for GNU Image Manipulation Program. It is a freely distributed program for such tasks as photo retouching, image composition and image authoring.
It has many capabilities. It can be used as a simple paint program, an expert quality photo retouching program, an online batch processing system, a mass production image renderer, an image format converter, etc.
GIMP is expandable and extensible. It is designed to be augmented with plug-ins and extensions to do just about anything. The advanced scripting interface allows everything from the simplest task to the most complex image manipulation procedures to be easily scripted.

Media Player Classic Home Cinema is a free audio and video player for Windows.
It's the only video player you will need.

AVG Anti-Virus Free Edition - trusted by 80 million users
NEW! LinkScanner® Active Surf-Shield checks web pages for threats at the only time that matters – when you’re about to click that link.
AVG Anti-Virus Free Edition
AVG Anti-Virus Free Edition is only available for single computer use for home and non commercial use.

The SeaMonkey project is a community effort to develop the SeaMonkey all-in-one internet application suite. Containing an Internet browser, email & newsgroup client, HTML editor, IRC chat and web development tools, SeaMonkey is sure to appeal to advanced users, web developers and corporate users.

Create 3D models and share them with the world.
Google SketchUp is software that you can use to create 3D models of anything you like.