Posts 2 Posts
Efficient many-to-many connections between posts, pages, custom post types, users.
Tag do plugin: relationships
MB Relationships
A lightweight solution for creating relationships between posts, terms and users in WordPress.
Select 2 Post Selector
Provides developers with a simple means of creating AJAX-powered Select 2 post select meta boxes
UM Relational Fields
Add relationships between users, post types and taxonomies in your Ultimate Member site.