This is a simple plugin for WordPress to test if the visitors ISP supports DNSSEC. The result is displayd in a widget.
Plugin Tag: validator
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Batch Validator
This plugin performs a batch markup validation check over your entire WordPress website.
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Virtualbadge.io Certificate Validator
This plugin helps implementing the Virtualbadge.io certificate validator into a WordPress website.
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VAT / UST ID Checker – Validator EU for WooCommerce
Just a small plugin that allows you to apply reverse charge (Europe) in WooCommerce.
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RSS Feed Checker
This widget will submit your wordpress RSS feed to feedvalidator.org, and check the results to verify your feed is valid.
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Numbers generator and validator
Numbers generator and validator lets you generate, manage and validate numbers or serials on your site.