innowyn

This plugin gives access to users based on his/her selected category post. It also provides shortcode for the list of selected category.
Features: 
– Easy installation 
– Admin have rights to set privileges for a particular category post that has to be seen by the user on frontend. 
– Shows only selected category lists in front-end. (For that use short code). 
 [selected_category_list]

Role wise category post

Role wise category post lets you see posts based on the category privillages for users.

“Restrict Registration” is a plugin for WordPress that allows you to control 
who is registering on your blog. This plugin uses simple blacklists and 
whitelists to define who can register for your blog, and who is restricted. Use 
simple literal matching, flexible asterisk wildcard matching, or powerful 
regular expression matching: it’s your choice! The options page is clear and 
easy to use. Set your lists, and you’re done!
This plugin was inspired by WP-Deadbolt, but has been completely rewritten and 
redesigned, and several new features have been added.

Restrict Registration

Use simple blacklists and whitelists to control who can and cannot register on your blog.

Role wise category post vs Restrict Registration