Drupal, I use it and I love it. If you want my evangelism on Drupal then look around my site, it's everywhere, so I'm not going to belabor the point here.

Tools to add the GeoURL location tags to you website to allow your site to be geographically located and searchable as a local resource to people near you.

The W3C source for the HTML special character codes for the entire ASCII character set. (the Unicode version is available elsewhere).

A very useful tool for looking up HTML tags, their syntax and compatibility. Great for tags that you don't use very often.

A very useful tool for looking up CSS codes, their syntax and compatibility. Great for codes that you don't use very often.

Check the keyword density on your site (and your competitors) to help you setup and manage your SEO.

An useful tool for determining related keywords that might help in your SEO.

A very useful tool for finding broken links in your sites.

The W3C validation tool for CSS code. The best way to check to see if your CSS is clean and follows all the rules. It may not guarantee that your code will display correctly on all browsers but it sure improves your odds of success. And it's a free online tool, accessible from any web browser.

The one and only W3C validator for web markup code. The best way to check to see if your HMTL/XHTML code is clean and follows all the rules. It may not guarantee that your code will run correctly on all browsers but it sure improves your odds of success. And it's a free online tool, accessible from any web browser.

While 1&1 may not be the hottest or fastest web hosting service (I refuse to get into that type of geek one-upsmanship debate), I do find 1&1 to be the best value for the services that I need. Plenty of file storage space, bandwidth, databases, all of the functionality I need, and excellent reliability and uptime. I use 1&1 for all of my own sites and I recommend them to all of my clients for their sites.

(full disclosure: the link below is an affiliate link and I do get a referral bonus for all purchases made when following this link)

A new open-source tool I'm working with for my site coding. It seems to have most of the functions that I like about Dreamweaver for developing code plus a few additional ones that I've been wishing for. If you're just looking a a tool to help you write you site code (HTML, XML, PHP, JavaScript, CSS, etc.) Then I think that you'll really like this application.

The open-source alternative to Dreamweaver as a WYSIWYG web page design and coding tool. I use it occasionally when I'm away from my desk or when I'm on a Linux system.

A really good web graphics tool that I use most of the time as part of the Dreamweaver/Fireworks suite of tools. There a other good tools out there, like Photoshop and Gimp, but I tend to use Fireworks mostly because I'm used to it and it integrates well with Dreamweaver. But I am working my way into Gimp as my open-source replacement for Fireworks as I move onto the Linux OS.

I've been using Dreamweaver since version 3 and it's the best WYSIWYG web design and coding tool that I've used, and as much as I try to recommend open-source tools whenever possible, this is one place where a proprietary application has the advantage, hands-down.

There are open-source alternatives out there (Kompozer is one), but they don't quite match the over-all capabilities of this application.