WP App Studio is the #1 Visual Development Tool for building custom post types, fields, taxonomies, views, widgets, forms, notifications, charts ...
Piklist is the most powerful framework available for WordPress. Easy for beginners... built for developers. Piklist helps you build things - fast.
Pods is a framework for creating, managing, and deploying customized content types and fields.
Automatic front-end output of Pods Templates.
Portico makes defining and administering custom post-types EASY. Define your post-type in a class, and an admin interface will be created for you.
Allows you to rock WordPress 3.3.1 as a full blown CMS for your customers!