This module can be used
This module can be used by many people to be able to solve their issues. There is a menu that can be made easier to understand.
This is a great module that that helps to query nodes that refer to a node. It is simple, efficient and works like a charm.
This is a fantastic module that removes the need for keeping additional elements with the content types. However, it does require MySQL 5.1 - I've encountered a number of hosts that do not support 5.1 yet.