extreme programming
There are many sites dedicated to Kent Beck's proposal for a successful software development process.
www.xprogramming.com   www.extremeprogramming.org   www.frankwestphal.de

refactoring
The homepage of Martin Fowler's book on refactoring with more smells, refactorings, articles, etc.
www.refactoring.com

sourceforge
On this site you will find thousands of open source projects like MikeTex, JUnit, Tortoise, etc.
www.sourceforge.com

junit
The homepage of the great JUnit testing framework. Examples, reviews, downloads, and more testing tools.
www.junit.org

java developer connection
My favourite site to stay up-to-date on Java technology. It is also a good resource for tutorials, code samples, and recommended reading.
developer.java.sun.com

javaworld
An excellent website on Java programming. It covers interesting topics and provides many tips, tutorials and a Q&A.
www.javaworld.com

javaranch
You will find helpful informations and links with regard to Java Certification. The design of the site is really neat.
www.javaranch.com

gamelan
Here you will many things related to Java including hundreds of applets and many tutorials.
www.gamelan.com

devguru
An excellent reference site for technologies like ASP, ADO, VBScript, JavaScript.
www.devguru.com

asp101
Good source for ASP code that can optimize database access. Everything is well explained.
www.asp101.com

the access web
Professional solutions for MS Access problems with a lot of VBA code and also many links.
www.mvps.org/access

fullaccess
A lot of short intermediate-level VBA code for MS Access databases.
www.fullaccess.de

bratta
You definitely have to see this extraordinary page. It always amazes me how much can be done with DHTML.
www.bratta.com   www.dhtmlcentral.com

svgtutorial
Marcel's website is the perfect starting point to gather information about SVG.
www.svgtutorial.com

kevlindev
Some impressive SVG demos can be found on this website.
www.kevlindev.com