"...but Visual Studio 2005 already has an Asp.Net Web Site Administration Tool!"
So why would you need this control?
The Membership Manager Control is not meant to replace the built-in Web Site Administration
Tool. Instead, it adds functionality that Microsoft left out.
The Asp.Net Web Site Administration Tool
The Asp.Net Web Site Administration Tool provides a great interface for managing
application settings and setting up access rules and user roles. It also includes
functionality for creating users in order to add them to those roles. But wait...
the Asp.Net WebSite Administration Tool works on your development machine and not
on your live web server.
And while you can certainly copy updated configuration files to your remote web
server, you probably won't want to do that with your database!
The Membership Manager Control
The Membership Manager control is designed to be placed into an access-controlled
location on your web site and is focused on handling the most common issues you
will encounter when administering your living web site.
Plus, you get extra features such as "Change User Name", "Automatic Wild Card Search" and more.
Here is a comparison of features: