this plugin allows to assign categories to users.
Adds a 'view' to the category row action, allowing you to quickly see all posts by that category
Grab RSS only from specific categories.
Displays a configurable list of the recent posts from a category of your choosing. This will help you highlight things such as site news, or something
Lists all categories in a dropdown box and after selecting one the second dropdown box gets populated via Ajax with all posts from this category.
Feedme is a simple and powerful tool that will surely enhance any WordPress install. As feed readers become more advanced and are capable of handling
Organise your lists with this funky tabbed list display widget!
Hide certain tags/categories from the public
A WordPress plugin which allows you to create templates for your asides posts. Instantly.
Integrates a widget that displays category and page-items in one html list with support for a user-defined order.
Inserts posts into pages corresponding to category. Add on plugin for Category Page by pixline.net. Requieres an active installation of Category Page
WP Subdomains is a plugin for WordPress that allows you to setup your main categories, pages and authors as subdomains.
Show vast categories and sub-categories with collapsable list in edit post admin panel
WordPress Filter is a comprehensive post filtering & template system. It allows the user to define a set of simple "Catches" (criteria) to be met
RSS link for this tag.