This plugin allows for the creation and management of widget sidebars on a per-page basis from a single dynamic_sidebar() call in your theme sidebar.
Over the years developing WordPress themes, I have had many designs that require a different sidebar for just about every page on the site. While it has been possible to accomplish this using a combination of PHP if/else statements or plugins, I have yet to find a decent solution for managing sidebars on a page-by-page basis. Since many of the sites I now work on require this functionality, I decided it was time to write a rather simple but effective plugin that handles this. Therefore, I'm introducing Unique Page Sidebars.
There are obviously some limitations to this plugin, and I don't expect me to use it on every site I develop, but I chose the most common use-case I have for needing dynamic sidebars, and developed this plugin to fit that need. That said, here is a list of features:
register_sidebar()on the WordPress codex)
However, there are a few drawbacks (some of which I'm looking to working out in subsequent versions):