Gimp is the GNU Image Manipulation Program. It is a freely distributed piece of software for such tasks as photo retouching, image composition and image authoring.
Paint.NET is free image editing and photo manipulation software for computers that run Windows.
Pixel is a RGB, CMYK and HDR image editing, photo retouching, graphics manipulating and animation program available for many operating systems.
PaintShop Pro You can do it all with Paint Shop Pro! Photography, graphics, art, and productivity all in one easy-to-use, affordable program!
Inkscape is an Open Source vector graphics editor, with capabilities similar to Illustrator, Freehand, CorelDraw, or Xara X using the W3C standard Scalable Vector Graphics (SVG) file format.
Scribus is an open-source program that brings award-winning professional page layout to Linux/Unix, MacOS X, OS/2 and Windows desktops with a combination of “press-ready” output and new approaches to page layout
Programmers NotePad the free, open source, text editor with special features for coders.
Kompozer is a wysiwyg HTML editor (Nvu/Composer fork) aimed towards advanced users.
Notepad ++ is a free source code editor (and Notepad replacement), which supports several programming languages, running under the MS Windows environment.
Coda is “one window web development” for Mac
Stylemaster From beginner to expert, Style Master will make working with CSS more efficient, more productive, and more enjoyable.
Quantas Plus is a highly stable and feature rich web development environment.
tlbox the best tools on the web
Cheat Sheets – XHTML, CSS, PHP, RUBY…etc
W3C’s Starting with HTML + CSS Tutorial
W3C Web Style Sheets CSS Tips & Tricks
CSS Organization Tip
Veerle’s Blog – CSS
100 Freebie CSS Resources
71 CSS menus for Free
53 CSS Based Navigation Menus
70 Expert Ideas for Better CSS Coding
CSS Based Forms
40 CSS Layouts
Listamatic-one list, many options
53 CSS Techniques You Couldn’t Live Without