Resources

General HTML/Code Tutorials/Guides
W3Schools Online Web Tutorials - Web Building Tutorials
DynamicDrive - DHTML and Javascript code library
Encyclopedia of HTML Elements - Learn all about HTML
CSS Guide - Stylesheet help
The Protagonist Web Resources - Freebies for your websites
Tutorialicio - Community-driven aggregator of the best programming, design and Photoshop tutorials from across the web
WebSoup - Webmaster Resource Directory

Free Remotely Hosted/Services
Gabbly Chat - Make your own live chatrooms!
FeedBurner - Make your site subscribable!
Feedo Style - Include RSS and ATOM content from any feed on your website
Chatango - Add free live chat to any webpage
Snap Preview Anywhere
I Love Polls - Free remotely hosted polls
Shoutmix - Free shoutbox/tagboard
Yourminis - Website widgets
MyFlashFetish - Flash music playlists and widgets

Installable Software for your site
HotScripts - Scripts directory
CuteNews - News and updates
Wordpress - Blogging software
phpBB - Forum software
XMB forum - Forum software
BlaB! Lite - Chat room software
X7 Chat - Chat room that integrates with lots of forum software
InkTank - InkTank is an online library system designed to archive fan fiction stories written using an already-imagined world.
Lussumo Filebrowser - The filebrowser is a lightweight PHP application that allows you to thumbnail images and view them in a web browser.

Generators, Themes and things
Spiffy Box - Simple Rounded Corner CSS boxes made easy
Washed Away Productions - Free Coppermine themes
FormLogix - Free web forms
Favicon from Pics - Create your own Favicons