validation of questionaire

Simple extensible Ajax-Style Email Form Validation using JavaScript and PHP.

A simple, generic form validation script for use in your PHP form processors

Verifies that the request for a page (containing the script) was made from page

Checks that postcodes are in correct format. Is written for UK format

In forms when asking for date fields it is a good idea to validate

It is validates the entered value to see if it conforms to the ICD-10 format

Provide the ultimate .NET API for reading, writing or validation of X12, EDIFACT, HIPAA 005010?

Professional Mailing Lists Validation Tool

Test if sites are online by title validation.

simple XML Editor with real-time validation against DTD or schema