WProofreader plugin for WordPress is a multilingual plugin for spelling and grammar check on WordPress websites.
BadgeOS is a plugin to WordPress that allows you to easily create badges and set up the steps and achievements users take to earn them. Badges are Mozilla OBI compatible and sharable via Credly.
A simple HTTP redirection plugin for WordPress.
Site Kit is a one-stop solution for WordPress users to use everything Google has to offer to make them successful on the web.