MB REST API
Pull all meta value from posts, terms into the WP REST API responses.
MB Custom Post Types & Custom Taxonomies
Create and manage custom post types & custom taxonomies easily in WordPress with an easy-to-use interface
Meta Box for Yoast SEO
Add content of custom fields to Yoast SEO Content Analysis to have better/correct SEO score.
Meta Box Text Limiter
Limit the number of characters or words entered for text and textarea fields.