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PTM is a Perl/HTML hybrid, similar to PHP in tag syntax. It allows for the ease of PHP-style inline code in your dynamic HTML documents while supplying the power of Perl that many find to be sorely lacking in PHP.
Rev = Really Easy Validation - write your form validation code once in this simple and powerful language that generates code for JavaScript, Perl, PHP, and Java. With Rev you get server side and client side data validation with no duplicated code.
Valid CGI Values is (currently) a XHTML forms based technologie for validating CGI values submitted by these forms. It consists of a form parser that analyzes web forms and a package with validation functions.