codersempire

Yahoo! Status Checker is a simple plugin which you can use on your wordpress websites as an new feature or advantage for your users with the ability to check if the particular yahoo user is online or offline.

Yahoo! Status Checker

Yahoo! Status Checker by Techya.Check any yahoo id to see if he is online or not.

redmade

Close the website for maintenance except for logged Admin and for browser that have set a specific cookie. 
To define
The options allow you to activate / deactivate the maintenance mode. It is also possible to modify the authorization cookie (name and duration). A link will also be provided that allows access to the site via the authentication cookie.

ReMaintenance

Close the website for maintenance except for logged Admin and for browser that have set a specific cookie.

Yahoo! Status Checker vs ReMaintenance