Linksammlung
Text mit Screenshots folgt
https://wordpress.org/plugins/advanced-custom-fields/
http://www.advancedcustomfields.com/
http://generatewp.com/post-type/
https://wordpress.org/plugins/types/
https://wordpress.org/plugins/ultimate-posts-widget/
https://wordpress.org/plugins/custom-post-type-creator/
https://wordpress.org/plugins/relation-post-types/
https://wordpress.org/plugins/ultimate-post-types/
https://wordpress.org/plugins/wck-custom-fields-and-custom-post-types-creator/
https://wordpress.org/plugins/post-type-switcher/
https://wordpress.org/plugins/custom-post-type-ui/
Frank Staude vom WP Meetup Hannnover hatte auch gerade das Thema Custom Fields, hier der Link zu seinen Slides:
http://staude.net/vortraege/advanced-advanced-custom-fields/