There; I was wondering if there was a plugin to manage

Hi There; I was wondering if there was a plugin to manage multiple users on multiple website hosted on different servers.

For Example:
Go Daddy:
Site: XYZ.com
Users: mainuser, xyzuser1, xyzuser2, xyzuser3

Bluehost:
Site: abc.com
Users: mainuser, abcuser1, abcuser2, abcuser3

Site: XYZ123.com
Users: mainuser, xyz123user1, xyz123user2, xyz123user3

ETC;

As you can see that on 3 different sites, the main user is consistently present. However, I would like to change that username and password or completely modify access to the mainuser. Is there a plugin that would allow me to control that from one main site rather than going to 3 different sites and modifying that profile?

Thanks!

I hope you get the point.