Numbers generator and validator lets you generate, manage and validate numbers or serials on your site.

This widget will submit your wordpress RSS feed to feedvalidator.org, and check the results to verify your feed is valid.

Just a small plugin that allows you to apply reverse charge (Europe) in WooCommerce.

This plugin helps implementing the Virtualbadge.io certificate validator into a WordPress website.

bValidator - Form validator for jQuery , bValidator is a jQuery plug-in for client side form validation.

This is a simple plugin for Wordpress to test if the visitors ISP supports DNSSEC. The result is displayd in a widget.

This plugin performs a batch markup validation check over your entire WordPress website.

Simple validation for your website.

Email Domain Validator for WooCommerce an easy tool for prevent fake orders.

Validates SBOL 2.0 files and converts SBOL 1.0 to 2.0.

A plugin with common features missed in WordPress, like favicon, meta tags, adding HTML to head and footer, WordPress e-mail from header filter, etc.

CiteKite automatically validates quotations you make of other websites and lets the world know you care.