• Odd-Even Day Color Calendar
       ~ Printing Tips
• ASCII Codes
• Decimal, Hexadecimal, Octal, Binary, ASCII Converter
• Binary,Octal,Hexadecimal Lesson
• Handy Formulas
• Color Names
• Computer Contest Archives

• Developer Shed ~ An Open Source Web Development Site (including Java, MySql, PHP, Javascript)
• W3 Schools ~ Full Web Building Tutorials: HTML, XHTML, CSS, Javascript, AJAX, ASP, PHP, and more
• SETI@home ~ a scientific experiment that uses Internet-connected computers in the Search for Extraterrestrial Intelligence (SETI)
• Astronomy Picture of the Day ~ Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.
• Atlas of the Universe ~ designed to give everyone an idea of what our universe actually looks like.
• International ACM Programming Contest ~ a Problem Set Archive with literally hundreds of practice problems. Also, online programming contests to enter. All sponsored by la Universidad de Valladolid in Spain! [ gone offline :-( ]
• The Great Computer Challenge

• APCS Teacher Java Course Support Docs

TerminalIO and BreezySwing classes

• Documentation

Reference

• Java 2 SDK API Documentation
• The Java Tutorial A practical guide for programmers with hundreds of complete, working examples and dozens of trails, groups of lessons on a particular subject, such as ...
         • The Swing Tutorial
• Java 2 Platform, Standard Edition (J2SE)
• AP Central

Software

• JCreator (site down)

• time
• Calendar Logic
• APCS Teacher C++ Course Support Docs

Sorting Demos

• Bubble
• Selection

Reference

• C++ Language Tutorial

• APCS Teacher Visual Basic Course Support Docs

no off-site links

HTML

• Images
• Hyperlinks
• Tables
• Frames and Targets

Forms

• Designing
• Adding Functionality
• Radio Buttons, Select Objects, and Check Boxes

Javascript

• Javascript Syntax Rules
• Rollovers and cheat sheet
• Error Trapping
• Delayed Actions
• Opening New Browser Windows
• Cookies
• Dates and Times
• Location vs Redirecion
• APCS Teacher Javascript Course Support Docs

HTML

• Sizzling HTML Jalfrezi... ~ New URL, same great HTML reference!

Javascript

• JavaScript 1.3 Reference
• Dynamic HTML

HTML, Javascript, and CSS

• QuirksMode ~ CSS, Javascript, HTML, W3C DOM, and Browsers (has good explanations too)
• Mozilla Developer Center

• SQL Examples
• MySql Data Types
• APCS Teacher PHP Course Support Docs

PHP

• The Official PHP Web Site ~ PHP Manual, Searchable Documentation, How Tos, and more

MySQL

• The Official MySql Web Site ~ Searching Documentation, and more