HEATKEYS

Delphi, the modern Pascal descendent, is introduced as a "learn by example" tool to solve math and science puzzles and problems

GPU is an open source Gnutella client that allows the sharing of both files and CPU-time between users.

Are you a beginner or expert Delphi developer? Looking for how to get started or need advice and help for a quick solution to your daily Delphi problems?

Visual Basic Discussions plus .NET, C#, game programming, and more (http://www.VBForums.com)

Channel 9 keeps you up to date with videos from people behind the scenes building products at Microsoft.

Online CalcuDoku puzzles

A Dabbler

The Math Forum is the comprehensive resource for math education on the Internet. Some features include a K-12 math expert help service, an extensive database of math sites, online resources for teaching and learning math, plus much more.

EmotiCODE is a code snippet search engine but mostly a place where developers can find help for what they need and contribute with their own contents.

Snipplr lets your store and share all of your commonly used pieces of code and HTML with other programmers and designers.