PDS
PDS is a developer API for storing and retrieving data for Drupal paths. Built to solve a need with blocks the module is implicit of application.
The problem: The Drupal block system doesn't provide an inherit way for a single block to be different across multiple pages.
A solution: arg() checks in the block body define block content.
PDS automates and simplifies retrieval of user-defined data for a Drupal path.