WP Schema Pro - creating micro-markup is no longer a difficult task! With a simple interface and selection, you can set up your layouts in minutes. Any layout settings you set are automatically applied to all selected pages and posts...
uSchema is useful for creating custom fields and microdata without writing a single line of code. Here uSchema helps both the developer and the site owner...
Schema Premium is a WordPress plugin that comes with features to add schema.org structured data markup in JSON-LD format, most recommended by search engines such as Google...