Have made a list of free programs I use instead of expensive products.

FTP:
FileZilla (instead of ex. flashfxp)

3D program
blender (instead of ex. 3D max or maya)
Email:
Thunderbird (instead of ex. outlook)

RTS GAME engine
Wild Magic Real-Time 3D Graphics Engine

Internet: (instead of ex. explorer,safari)
Firefox
Crome

Free Screen to video:
Free Screen to video is a freeware designed to record your computer screen activity in video

Officeprogram: (instead of ex. ms office)
OpenOffice.org

Print Layout tool: (instead of ex. InDesign)
Scribus

Backup dvd and cd's:
Handbrake

Multi IM tool: (all in one, icq,msn and more)
Trillian

Musikplayer: (instead of ex. ms musicplayer, apple musikplayer)
Songbird

Video player:
VLC

Image Editors / Creators: (instead of ex. photoshop)
Gimp / Gimpshop

HTML web editor: (dreamweaver killer :) )
NVU
http://nvudev.com/index.php

Media portal:
PC Multi-Media Center

Converters:
Pazera Free MP4 to AVI Converter is a freeware application which converts iPod/PSP movies (MP4, M4V, and MP4V) to AVI or MPEG. The application allows you to set many parameters used by encoder: audio and video codec, audio and video bitrate, fps, sampling frequency, resolution, and other. The Pazera Free MP4 to AVI Converter interface is very simple and user-friendly. To convert video files, just drag & drop them into main window and click on the Convert button.

Cool firefox Extensions:
measureit
Colorzilla
Firebud
Web developer