useful and intuitive

while many automatic, algorithm-based related posts plugin are out there, if you need to control totally the relationships between posts, few tools are available, and this is one pretty good.

pros:
you can define any kind of custom post types and then relate them
you can define relationships (from/to/both) between different post types
you can sort by title or date
the admin interface in well designed
it’s very light coded ??

cons:
at the moment the plugin can only show the title, but it would be very useful to show at least the featured image and the excerpt, if present.