How to create plugin list groups?
Displaying some custom text there can be done using views_plugins filter: add_filter(‘views_plugins’, ‘add_plugins_views’, 10, 1); function add_plugin_views($views) { $views[‘foo’] => ‘bar (?)’; return $views; } If what you need is actually setting a property for all plugins and display a count of this custom property you might want to take a look at WP_Plugins_List_Table.