HMVC - Calling view (and other resources) that is located in another module

[eluser]Michael Wales[/eluser]
Wick (forum thread) allows you to load and render one controller from another - providing a pretty unique, and easy to use, solution to HMVC (not really HMVC, but damn cool).

Matchbox is another library by Zacharias Knudsen and it's a full-fledged HMVC library.

Both of these have been used and abused by the community pretty extensively and are in great shape for real world use.