Nettl :Directory is a Nettl customer exclusive solution that allows us to quickly and easily create beautiful and easily maintained directory websites.
You can use this for directories, or any listing of multiple content types.
See an example of the plugin in action here:
Directory search: http://aspect.uk.w3pcloud.com/directory/
Directory listing: http://aspect.uk.w3pcloud.com/directory/2009-audi-a3-sportback/