Polylang (in English)
Create copies of post and pages in different languages, and Polylang will display the content in the preferred language of the visitor.
Testing plugins with WordPress 5.6 and PHP 7.4
This site tests popular frontend and backend plugins in a WordPress multisite network, running the latest versions of WordPress and PHP. Content creating plugins are tested for valid HTML output and if the plugin sets cookies or not.
Really Simple SSL
Easily activates https on your WordPress provided you've already got an SSL certificate.
Caldera Forms
A feature rich WordPress forms builder including file uploads, conditionals, calculations and more.