Web Development Helper is an Internet Explorer plugin that provides a set of useful tools to both Ajax/JavaScript developers as well as ASP.NET page and control developers.

For client-side script-based development, Web Development Helper provides HTTP tracing capabilities, as well as much improved script diagnostics, and tracing facilities, as well as an immediate window.

For ASP.NET developers, when developing against your site on your local development machine, this tool provides the ability to view ViewState, ASP.NET trace messages, contents of your cache etc.

One of the best sites I have found for implementing AJAX functionality in your ASP.NET applications.  Includes links to the essential installers, and a prebuilt control toolkit.

One of the best resources I have found for everything ASP.NET.  Has multiple resources including small training videos, blogs, and forums.

Do you like using the Web Developer extension in Firefox? Well now there's a similar tool for IE. Seems to work well for viewing the DOM, adding table/div borders for trouble-shooting, modifying css values on-the-fly, changing browser resolution, quickly clear cache & cookies, etc.

The primary mission of the Subversion project is to "provide a compelling replacement for CVS." One of its secondary missions is to provide a user interface similar to CVS's, so that switching to Subversion will be painless for CVS users.

So, if you learn Subversion's new features, you're ready to start using it, right?

Almost. Although the interfaces are similar, there are some important differences. Subversion has some features that CVS either lacks or offers differently; plus, there's the need to unlearn some of the bad habits that CVS has instilled in you.

With that, I give you the top ten Subversion tips for CVS users. The first six tips address bad CVS habits; the last four address good Subversion habits.

DebugBar is a nice IE toolbar that is similar to the Web Developer plugin for Firefox. It allows you to see HTTP headers, manager javascript errors, validate and troubleshoot webpages quickly.

A plugin to allow you to connect to Subversion code repositories directly from within Eclipse.

Editors specifically for many types of web documents, including HTML, XML, CSS, and JavaScript. Another MUST HAVE for web development in Eclipse. It’s easiest to install these using the Callisto Install site for Eclipse. The link goes to a tutorial on how to install and use the WebTools.

Provides syntax highlighting and syntax validation among other things for PHP development. MUST HAVE for developing PHP in Eclipse.

Keep up with the latest in AJAX development, from sites that use Ajax in cool new ways to libraries to help you get the most out of this hot technology trend.

An excellent, free book on the Subversion code repository system published by O'Reilly.