This plugin detects one-time email addresses (disposable email, trashmail, mailinator, 10minutemail) and helps to keep your userbase and comments clea
A plugin that makes building custom HTML forms by hand easier.
WP-LightForm, the prettiest WordPress contact form.
Check the doctype validity using W3c validator (hml , xhtml, ...) when you create or update your page / post / custom post type and show the result in
Reject disposable email addresses in Gravity Forms email fields.
Address Autocomplete, Email and Phone number Validation for WordPress and WooCommerce. Capture accurate customer details with real-time verification.
LH Signing allows you to create configurable validated lists like petitions or event sign ups. It is the only self hosted solution in WP
This plugin provides AJAX enabled comments with paging,comment posting and fields validation to your WordPress blog.
WP StopSpam verhindert Fake-Registrierungen ganz ohne Captcha, sondern nur mit Sicherheitsfrage und Bot-Techniken.
This plugin uses AJAX & Thickbox to display a dialog based Content Warning to users, requiring them to acknolwedge they are at least 21 years old
WP-Validate collects all the pages on your site and runs them through the W3C's HTML Validator.
With the Byteplant Email Validator plugin you can easily verify if an email address really exists and is valid (http://www.email-validator.net).
bValidator - Form validator for jQuery , bValidator is a jQuery plug-in for client side form validation.
This plugin allows validation of custom fields.
WP Tota11y is an accessibility visualization toolkit.
Adds a new comment validation method in the "Before a comment appears" Discussion subsection panel.
This plugin attempts to take arbitrary posts and comments and transform them into valid XHTML, a standard that describes how web-pages should be writt
Extends Contact Form 7 Email Validation.
This plugin makes Thickbox CSS compliant.
Checks comment to ensure they are longer than the minimum, shorter than the maximum and also allows comments to be forced into moderation based on len
Validates SBOL 2.0 files and converts SBOL 1.0 to 2.0.
This plugin displays a bloggers alive.io status to their blog and shows optional messages depending on if the blogger is alive or not.
Prevent URLS & Emails in gravity forms textarea fields.
Validation Plugin comments. The plugin is based on js-script jquery.validate.
This plugin integrates RedPen text validation into the WordPress editor.
CiteKite automatically validates quotations you make of other websites and lets the world know you care.
LH Teams creates a cpt called a team, this is effectively a configurable validated list of users, which can be managed by the author
With the Byteplant Phone Validator plugin you can easily verify if a phone number is really valid and callable (http://www.phone-validator.net).