Graphics Manipulation - The GIMP - Platforms: Windows, Mac, Linux
http://www.gimp.org/downloads/
WYSIWYG Web Authoring - Nvu - Platforms: Windows, Mac, Linux
http://www.nvu.com/index.php
Development Environment - Maguma Open Studio - Windows
http://www.maguma.com/en/maguma-open-studio.html
TopStyle Lite free CSS editor
http://www.bradsoft.com/topstyle/tslite/index.asp
Color Schemer Online -- free tool for creating new color schemes
http://www.colorschemer.com/online.html
Notepad2 Editor -- light-weight, fast, free, regex search and replace, syntax highlighting ++
http://www.flos-freeware.ch/notepad2.html
ColorCop Many cool color and editing features in one package
http://www.prall.net/tools/colorcop/
PixelRuler Free virtual screen ruler
http://www.mioplanet.com/products/pixelruler/index.htm
Sizer -- allows you to resize any window to an exact, predefined size
http://www.brianapps.net/sizer.html
Lorem Ipsum -- Generates dummy text
http://www.lorem-ipsum.info/generator3