Similar plugins exist, but they are either limited in scope,...
Similar plugins exist, but they are either limited in scope, or have terrible configuration interfaces. HeadTag aims to be an all-in-one solution to provide the ability to add several types of tags to the document.
The plugin can be used in two ways:
By using the plugin configuration to designate tags to be inserted by specific menu item, access level, or user group.
By plugin tags inserted into content items, descriptions or modules (which process content plugins).