HEATKEYS

Over 38,000 indexed Scripts and Tutorials for webmasters. Resource center for PHP, CGI, FLASH, XML, ASP, ASP.NET, Phython and CFMLscripts.

Hard hitting articles, dicussions, resources, and more all focusing for real developers in the real world.

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

Experts Exchange enables people with technology problems to quickly and easily solve their problems by collaborating with experts from around the world.

International Electronic Discussion Forum: EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals

Audio Spectrum Analyzer Software and Loudspeaker Design Software. Purchase TrueRTA, WinSpeakerz and Introduction to Loudspeaker Design.

SourceForge.net. Fast, secure and free downloads from the largest Open Source applications and software directory

Electronic circuits projects and diagrams

World Biggest Site for Arduino Projects – Tutorials – Ebooks – Project Ideas

The American Radio Relay League (ARRL) is the national association for amateur radio, connecting to hams around the U.S. with news, information and resources.