Web standards and Usability

MIT IS&T: Usability Guidelines

W3C Markup Validation Service

WebXACT is a free online service that lets you test single pages of web content for quality, accessibility, and privacy issues

Check your website Rank, Reach , Page Views

Colorblind Web Page Filter

Vischeck Colorblind Web Page Filter

C++

SGI's C++ Standard Template Library Reference - with examples for each container

Ray Lischner's C++ in a Nutshell site - Comprehensive

Microsoft Visual C++ 5.0 Standard Library Reference

C++ Templates Tutorial

How to Create and Use Program Libraries on Linux

C

Standard C Reference

UNIX System Calls and Subroutines using C - Comprehensive

XSLT

XSLT Reference

XML

Javascript

Netscapes Javascript Guide

Javascript Online Resources

CGI