Html links

Internet Content Rating Association

Home of RSACi rating system.

PICS Third-Party Rating Services

A list of rating services, and self rating systems.

Safe for Kids

Very simple self-rating system.


Author-rated protection system with simple yet comprehensive encoding scheme. Add-on for Internet Explorer.

Unicode Home Page

All you ever needed to know about Unicode.

Url Minder

Track changes to web pages automatically.

W3C Validation Service

Possibly the definitive validation service, and its free.

World Wide Web Consortium (W3C)

Definitive source for web information. Specification for HTML 4.01.