New standard of validation for Contact Form 7 plugin.
Customize the default jQuery validation messages for all Visual Form Builder or Visual Form Builder Pro forms.
WP Advanced comment is a powerful and easy to use AJAX based comment system for wordpress with drag and drop custom fields.
Avoid those pesky blank page with an error message like "please fill out required fields" then loosing your/users comment info.
Real Time Validation for Gravity Forms increases conversion rates of your Gravity Form using in-line validation messages as user types in field.