dynamick

Using this plugin, you can display a text widget for any specific category and/or its sub-categories or for a specific tag. For example, you want to show different sidebar banners based on different category. It is easy using this plugin. Just create a new widget and select the category or tag.

Category and Tag Specific Widgets

Display widgets for specific categories or tags.

sachinwpexp

Restrict post access plugin is for restricting specific post/page to specific users. So only assigned registered users will able to see the post. When activated, you will see Assign users meta box below post/page editor and you can select specific users for that post/page.This plugin will restrict access in menu, blog page, category page and single page.

Restrict post access – Simple

Restrict post access plugin is for restricting specific post/page to specific users. So only assigned registered users will able to see the post.

Category and Tag Specific Widgets vs Restrict post access – Simple