Everett

This is a a simple plugin that is used for setting a reminder of when your domain is going to expire. You set the date once and it will display it in the panel. This is only the first version and we will be looking to expand some of the features available.
This includes:
<ul>
<li>A countdown that will give you a ten and then a five day reminder</li>
<li>A smoother look</li>
</ul>
If there are any questions or if you are looking for more updates about plugins then go here blackthought.posterous.com

Domain Reminder

Simple plugin that allows a user to remind them when the blog's domain is about to expire

Anton Aleksandrov

Zondo Norge AS

wpdrift.no

This plugin allows you to have multiple domains in a single WordPress installation and enables custom frontpage or redirect for each of them. Can accept any domain, autoconfigure new domains or just accept listed domains. Plugin won’t do any configuration on hosting or domain level, so you should take care of that – point domain to the same webroot and configure webserver to accept that.

Landing pages and Domain aliases for WordPress

This plugin allows you to have multiple domains in a single Wordpress installation and enables custom frontpage or redirect for each of them.

Domain Reminder vs Landing pages and Domain aliases for WordPress