“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.

projoktibangla

Display menu or widget items based on if a user is logged in, logged out or both.
Created By: http://goo.gl/Ou4dOP

PBP Restricted Menu-Widget by role

Display menu or widget items based on if a user is logged in, logged out or both.

Restrict Registration vs PBP Restricted Menu-Widget by role