Windows

Brackets

Notepad++

Komodo

Phase 5

SynWrite

Macintosh

Brackets

TextWrangler

Textmate

Komodo

Aptana Studio

Filezilla

FireFTP

SmartFTP

Chrome

Mozilla Firefox

Safari

Opera

Internet Explorer

Web Browser Emulator

From here down, things are a bit long in the tooth; you may find better stuff through simple Google searches...

• A List Apart
• Digital Web Magazine
• meyerweb.com
• Sitepoint
• Webmonkey

More to come...

A partial list...

• Cool Home Pages
• Cool Web Designs
• styleboost
• The Best Designs
• The Webby Awards
• CSS Zen Garden

More to come...

• Five simple steps to designing grid systems
  By Mark Boulton.
• Page design (Web Style Guide)
  Hierarchy, grids, headers and footers etc.
• Layout articles
  At A List Apart

• Photoshop-like Colour Picker
  This color picker mimics Photoshop color picker by layering transparent images.
• Colour Code Generator
  Colour chart that allows you to test colours as a background and copy hecodes.
• More Crayons
  A site describing the old 216 "web safe" colour palette and the need for "more crayons". Colour selection tools based on new palette as well.
• Color Blender
  From Eric Meyer.
• Color Schemer Online
  As the title suggests.
• Colour Contrast Analyser
  From Juicy Studio. Analyze the contrast between two colours.

• Five simple steps to better typography
  By Mark Boulton.
• Typography
  From the Web Style Guide.
• Typography articles
  At A List Apart.
• TypeTester
  An excellent tool that let's you compare screen type styles for your CSS use.
• dafont.com
  Free fonts fro you to download.
• Common web fonts
  Table of most used web-fonts on Windows and their most common variants.
• Identifont
  Identify a font from a sample by answering a series of simple questions.
• My Fonts
  Find fonts, try fonts, buy fonts.
• Chank
  Hip fonts for the discerning web designer. Some freebies.
• Silkscreen: The Font
  A small bitmap font for free.

• W3Schools
  Tutorials and examples.
• Complete CSS Guide
  From Westciv.
• The Layout Reservoir
  From bluerobot.com.
• CSS Layout Techniques
  From glish.com.
• project seven
  Examples, tutorials, support.
• Little Boxes
  More CSS layout techniques
• CSS Property Index
  By Brian Wilson (no not THAT Brian Wilson)

• stock.xchng
  Free stock imagery.
• iStockphoto
  Almost free stock imagery.
• Veer
  Professional libraries.