Some Wordpress plugins are often updated, which is good think. Plugins that are updated are 100% compatible with last Wordpress version and they also are the most secure possible. A plugin that has not been updated for a long time might not work with last Wordpress version and might create a security breach for you website.
Select Javascript files and/or write Javascript functions to any single page or post
Please use https://wordpress.org/plugins/storagemadeeasy-multicloud-files-backup/. This plugin is deprecated and no longer maintained.
HH Quiz just enables the Quiz JavaScript-Framework (GNU Lesser General Public License) from Felix Riesterer.
The plugin simplifies the WordPress admin user interface by hiding most of the WordPress menus.