(X)HTML
Hypertext Markup Language- Getting started with HTML By Dave Raggett, one of the authors of the HTML spec. Great for beginners.
- HTML 3.2 Spec and the 4.01 spec.
- HTML Characters You write © for © and all that stuff.
- Use the right DOCTYPE O'Reilly
- DOCTYPE Explained also from O'Reilly
- All about Character encoding
Apache
The Apache webserver. Sorry, I don't have any experience with IIS or any of the others.- Apache server Main project page
- Apache docs v1.3 v2.0, & v2.2.
- mod_rewrite Mod rewrite guide for v1.3
- .htaccess tutorial from Apache v2.0
- Apache Software foundation Home to dozens of open-source projects, not just the httpd server.
- URL Rewriting Create a .htaccess file
- Dynamic Drive .htaccess password generator
- Apache Desktop Ref A commercial book with a free online ref man.
Blogging
Be a blogger. See the RSS section too.- Wordpress Free blogging software. Or get a free blog at wordpress.com.
- Blogger Google's free blogging platform
- b2evolution Comprehensive blogging engine, free.
- Greymatter Open-source blogging platform
- Movable Type Free under certain conditions (I think.. I've never used it)
- Serendipity [s9y] Free blogging/cms platform. [Php]
- Pro Blogger How to be a good blogger
Color
Color schemes- Wellstyled Color scheme generator. Mono, Contrast, Triad, Pastel, Strong- lots of options. Gives you a 4-color scheme as output.
- Visibone 216 web-safe colors with contrasting colors
- Colorblender Match colors & design a palette
- CPick Little Windows program to easily pick any color from your screen (with magnifier), then manipulat & ouput as you want. Scroll down & you'll find it.
Content Management Systems
Easily manage your content with these systems :)- Open Source CMS Try out dozens of CMSs to decide what's best for you
- Drupal Open source CMS
- Joomla!
- PHP Nuke
CSS
Cascading style sheets, separation of church and state- oh I mean separation of content and presentation.- CSS 1 spec and the CSS 2 spec.
- Max Design CSS lists, floats, selectors tutorials
- CSS Zen Garden Oldie but a goodie, learn about CSS design. The ultimate example of separation of content and design.
- CSS Poster Create a graphical representation of your Stylesheet [about]
- CSS Remix A fresh blend of the best CSS design
Design, Style & Useability
Create usable sites for a modern age :)- Alert box discusses current issues concerning web useability- ie: Top 10 Design mistakes 2002
- Stupid Web tricks Things not to do to your site
- OSWD Open source web design. d/l free designs.
DNS
Domain name servers- DynDNS Dynamic DNS, some services free
- Granite Canyon The public DNS
- No IP Some services free, the rest commercial. Dynamic DNS service
- DNSStuff A bunch of useful DNS tools & tests including the DNS Report.
Domains
Domains and registration- Sedo Domain parking
- Country code list Top level domains (TLDs) per country
- 3Char domains
- document.write('www.GoDaddy.com '); www.GoDaddy.com www.GoDaddy.com ICANN Acredited $8/year DNS services
- Omnis ICANN Acredited $7/year, DNS services
- Dynadot ICANN Acredited $8/year DNS services
- How to get an expiring domain How to use the backorder services
- Whois & much more
ECommerce
Selling / buying things- OSCommerce Open-source eCommerce solution
- VirtueMart Open-source
- Zen Cart Open source shopping cart system
Editors & IDEs
Text editors, & integrated development environments for web development.- Textpad I use this powerful text editor several hours of every day :) Has syntax hiliting & + [shareware]
- Emacs FAQ
- Editplus Text editer, Syntax hiliting, Commercial, Haven't tried it :)
- The Vim editor and its docs. Used by many. [vi improved]
- BBEdit Awesome text editor with all you need for web dev. [Mac] [commercial]
- Site Aid HTML Editor
- Matrix Y2K Free HTML editor
- Max's HTML Beauty Full-featured HTML editor [free]
Firefox Extensions
Firefox extensions that are helpful to webmasters- Perfomancing Blog editor that sits inside firefox
- No Script Selectively disable Javascript
- IE Tab Open IE right inside Firefox
- PDF Download You choose if you want to open or download those nasty PDFs
- Web Developer Toolbar & menu with various web developer tools
- User Agent Switcher Masquerade as another browser
- Mouse Gestures Speed up your browsing
- Google toolbar (Check your PR I guess)
Fonts
- Font identifier Series of questions to help you identify a font
- Dafont Browse & download free fonts
Forum Software
Have a community- Vanilla Open-source standards-compliant discussion forum (Php/MySQL)
- vBulletin Commercial, but one of the most popular forum packages (Php/MySQL)
- PhpBB Open-source. Reputation for being buggy/insecure (Php/MySQL)
- SMF Simple Machines Forum. Free, but not OS. (Php/MySQL)
- IPB Invision Power Board - Commercial, but pretty popular (Php/MySQL)
- Phorum Open-source, nice product (Php/MySQL)
- bbPress Forum software from the makers of Wordpress. [free]
Freelancing
Find freelance programmers, designers, translators etc. Or find work :)- Elance Don't know much about 'em
- document.write('Get a Freelancer'); Get a Freelancer Get a Freelancer I've had good experiences at GAF.
- Guru One of the biggest, and supposedly one of the best
- Scriptlance
FTP / SSH / Telnet
File transfer & server connections/control- Sitecopy Keep the remote site sync'ed with the local site (Win, LInux, FreeBSD, & others)
- Smart FTP Easy Windows FTP client. [free for personal use]
- PuTTY a Free Telnet/SSH Client
- WinSCP free SFTP and SCP client [windows]
- Beyond Compare Folder/file comparison. Local & remote. Includes FTP abilities. [commercial] (but awesome)
- Remove site/pages from Google SERPs
- Add your site FAQ about adding your site
- Webmaster guidelines
- Google-friendly site making a google friendly site
- Webmaster central site status, sitemaps, and more
- Google Base Submit your content
- Google sitemap generator for Wordpress Super easy
- XML Sitemaps Create sitemaps to submit to Google, Yahoo & other SEs
- Google's python sitemap generator
- Separatrix Google sitemap generator
Graphics
Tools for creating/manipulating images & sources for images- AjaxLoad Create an AJAX "loading" animated .gif
- Favicon Chami's online tool for creating favicons from other images
- PhotoMatt On how to create a favicon
- Dynamic Drive Favicon generator. They also have a button maker, a gradient image maker, and an image optimizer.
- Corbis Royalty-free & commercial images (req. registration)
- Image splitter Slice and dice your images
- Image Embellisher Add special effects to your images (online tool)
- Browsershots Test your webdesign in different browsers. Free screenshots/thumbnails of URLs.
- Thumbshots Free, (with attribution) hosted thumbnails of your website. Sites to get thumbnails for must be in Dmoz
- The GIMP GNU Image Manipulation Program. Like Photoshop/Fireworks only better & free.
Javascript / AJAX
Javascript is not Java, and the ubiquitous AJAX is Javascript.- Scriptaculous Javascript effects/AJAX framework, based on Prototype
- Mootools Ultra compact Javascript effects/AJAX framework
- Prototype Javascript framework- Effects, AJAX, OOP
- Mochikit Very complete framework (AJAX, effects)
- Visibone JS Reference Kinda hard to read, but good info
- CompTech's Javascript manual old, but a good reference for JS functions & objects
JS WYSIWYG Editors
Javascript editors to place on your pages or in your web app.- Xinha I've used this.
- FCK Editor
- Mozile From Mozilla
- Cross-browser RTE from Kevin Roth (I've used it)
- Kupu Easily integratable with different CMSs
- TinyMCE Open-source platform independent web based Javascript HTML WYSIWYG editor.
Mailing lists / Listserv
Manage mailing lists & Listservs. The ones marked "Listserv" are for email discussions among many users, the others are for you to email to the list.- Majordomo Listserv manager [perl]
- Procmail/ Smartlist Manage mailing lists / Listserve
- Mailman Listserv mailing list manager with web interface [Python]
- Simple mailing list [php/mysql]
- Php List Full-featured mailing list manager [Php]
- Php Mailer Full featured email transfer class for PHP
Maintenance
Keep your site in tip-top shape- W3C Link Checker Check for dead links
- Dead links Dead link validation spider
- Check URL Find broken links
- Xenu's Link Sleuth Analyze your site for broken links
Monetization
How can you make money with your website?- CPC, Contextual FAQ
- Yahoo Publisher Network YPN
- MSN Adcenter - Adcenter blog.
- Jensense Jennifer Slegg talks about contextual advertising
- document.write('Text Link Ads'); Text Link Ads Text Link Ads Sell text ads on your site.
- Casale media CPM ads
- document.write('Linkworth'); Linkworth Linkworth Automatic system for selling links on your site
- Link Adage Sell links
- Pro blogger How to make money with your blog.
Perl
Larry Wall's dynamic programming language.- Perl docs
- Perl FAQ
- CPAN Get Perl modules, scripts & binaries.
- IndigoPerl a Windows distro.
Php
Php the web programming language- Official Php site Search the php function list right from the main site, or better yet, download the complete docs.
- Php Classes.org Learn by using the example scripts they have (req. registration)
- Hot Scripts Php scripts
- Predefined variables See what's in the $_SERVER array etc
Promotion
Get the word out about your site.- Link Adage Buy / barter for links
- DP's document.write('Coop Ad Network'); Coop Ad Network Coop Ad Network Get links from many sites [free]
- PRWeb Press releases [commercial]
- Google's ad network. Quick & easy to get started [commercial]
- I Newswire Free & Paid press releases
- 24-7 Press release Commercial press releases
- PR.com Free press release service
- PR Free.com Another free one.
- PR Leap And another :)
- Pressbox UK-based press release service. Looks like it's free
Reg Ex
Regular Expressions- Javascript Regex How to use Regular expressions in Javascript
- Using regular expressins in Php Zend tutorial on PCRE, preg_match() etc
- Regular Expressions by Kenneth Stephen. Comprehensive
- RegEx in 10 steps by Russ Olsen
Robots / Spiders
Handling robots- Robots.txt Keep robots out with the Robots.txt file
- Who's knocking on the door? Explaination of robots.txt & the nofollow meta tag, has examples
- Database of robots
- Web robots FAQ
- Robots.txt generator From SEOChat
- htdig Free crawler
- Lucene/Nutch Apache's crawler software (free) {Java}
- Robot Trap How to keep bad robots, spiders and web crawlers away
RSS/Atom feeds
Learn about syndication. See also the blogging section. RSS => RDF Site Summary / Really Simple Syndication.- Feedburner Keep track of your feeds/subscribers
- MagpieRSS Create RSS/Atom feeds with Php
- Feed Validator RSS and Atom feed validator
- Atom 1.0 Spec
- RSS 1.0 Specification RSS 2.0 Specs are here.
- Intro to RSS Really simple
- RSS Writer Useful Inc's RSS creation [Php]
Ruby / RoR
Ruby is a programming language, Ruby on Rails is a simple open source web application framework written in Ruby.- Ruby Official Ruby site - Core ref - quickstart - FAQ
- Try Ruby Interactive Ruby tutorial in your browser.
- Ruby on rails Official site
SEO / SEM
Search Engine Optimization & Marketing & Online marketing / promotion in general- SEO Book Aaron Wall's weblog
- SEO Moz Rand Fishkin's blog
- Matt Cutts Google employee
- Copyblogger Copywriting tips for online marketing success.
- Keyword suggestion tool See what keywords you should target. Integrates Overture & Wordtracker data
- Keyword tracker Monitor your SE rankings
- document.write('Co-op ad network'); Co-op ad network Co-op ad network Free advertising on many sites
- Overture keyword tool Now part of Yahoo
- Wordtracker Keyword research (commercial)
- Shoemoney Jeremey Shoemaker's Blog
- Dave Naylor AKA DaveN
- SEO Buzzbox Another SEO Blog
SPAM
Dealing with SPAM- Email Riddler obfuscate your email
- Akismet A collaborative effort to make comment and trackback spam a non-issue. (wordpress plugin)
- Auto-close comments Wordpress plugin to close comments on old posts, avoiding spam.
- Bad Behavior 2 Wordpress plugin, analyzes HTTP request to kill spam
- Spam Karma Another WP plugin to eat Spam
- Spam Huntress Blog about fighting Spam
- SpamAssassin Open-source spam filter (from Apache)
- CAUCE Coalition Against Unsolicited Commercial Email
- SPF is broken sender policy framework is harmful
SQL
All about SQL (mostly MySQL-specific stuff)- Official MySQL Documentation Browse or download
- PhpMyAdmin Defacto web-based MySQL server administration tool
- PosgreSQL docs Official docs online
- PhpPGAdmin Web-based PosgreSQL admin tool
- SQL Notes Basic commands for MySQL & PosgreSQL
Statistics
Server stats can be really useful- AWStats Open source stats generation
- Analog Stats / logfile analyzer
- Report magic Post processing for prettier output for Analog.
- Google Analytics Formerly Urchin. Nice free analysis opportunity
Tools
There are lots of tools that didn't seem to fit in the other categories- Project IP See the headers your browser sends out. Helpful for troubleshooting stuff
- Future pagerank from Seochat. More tools here (tons of 'em)
- Page Strength A composite of many different factors analyzing SE page strength. SEOMoz.
- Web page analyzer Detailed report of your site.
- WayBack Machine See what websites used to look like
- Domain to IP Look up multiple domains and see their IP address
- Verify pagerank Is if fake or not.
- Web Form Factory If you don't know programming, create a form backend here
- RFC Ref
- Alexa Traffic ranking
- McDar's Google dance tool Check Google search results on different DC's (data centers)
Tutorials, Examples & Code
This is for sites that have lots of examples and tutorials, but don't fit into one category for JS, CSS, Php etc.- Brainjar Tutorials for Javascript, DHTML, Asp, .NET, Java, & CSS
- W3C Schools Tutorials & Reference on: HTML, XHTML, CSS, Javascript, DOM, Php, WML & more.
- DevShed Sections for all major programming languages
- WDVL Web developer's virtual library
- Code Project's web scripting section.
Validation, Cross-browser checking
Make sure it validates and works in most browsers- HTML 2 Txt See what your website looks like to a text-only browser such as lynx and some search engine spiders
- W3C HTML validator
- Jigsaw W3C CSS Validator
- Backwards Compatibility Checker Delorie's tool to see what your page looks like with various browser features disabled (Frames, JS, CSS etc)
- Header Checker See what HTTP headers your site sends out, check for correct mime types, 301 redirection etc
- Walidator Validate CSS, HTML, RSS, RDF, XHTML, etc
- WebXCACT Test your site for quality, accessibility, and privacy issues
- Favicon validator Make sure your favicon file, link etc are all working cross browser.
WebDAV
Web-based Distributed Authoring and Versioning (Thanks Dan M. for suggesting this)- WebDAV FAQ
- WebDAV.org
- mod_dav for Apache
- O'Reilly article about WebDAV
Webmaster Forums
Talk about what you're doing- DigitalPoint Relatively new, growing fast
- V7N Forums John Scott's Webmaster forums
- Sitepoint Big!
- WMW Old. Brett Tabke's take on webmastering.
- Search Engine Watch Forum, blog, a