Pods – Custom Content Types and Fields

Create custom post types, custom taxonomies or custom fields, or extend existing post types, with this all-in-one free plugin. Similar to Advanced Custom Fields and CPT UI and even features relationships.

Pods Framework screenshot

Demo

The following is the content of the custom field named my_custom_pods_field: "WordPress has the ability to allow post authors to assign custom fields to a post. This arbitrary extra information is known as metadata."

Extract from WordPress.org

Create any type of content that you want — small or large — we’ve got you covered. Every content type created with Pods gets all the love it needs to grow up big and strong. You’ll get an easy to use interface that lets you manage custom fields and how your content type will look or function.

https://wordpress.org/plugins/pods/

Now with WordPress 5.8 stable - most plugins works well