brandonlassiter

Creates a login widget to place anywhere on your WordPress site. Login form can be placed in either a widgetized area or using a shortcode inside posts or pages.

Custom WP Login Widget

Creates a login widget to place anywhere on your Wordpress site.

Bonny85

LB Users Counter is a plugin for WordPress. Allows you to add a widget to a sidebar, where you can view some attributes with respect to the number of users browsing the website (online, offline and online user name).
API Reference
User Class
This class contains the static methods for get info of users login
<ul>
<li>
User::getUserOff() This function get number of users offline.
</li>
<li>
User::getUserOn() This function get number of users online.
</li>
<li>
User::getNameUserOn() This function get the names of users online.
</li>
</ul>
<a href="http://www.lucabonaldo.it/lb-users-counter/" rel="nofollow ugc">Documentation in Italian</a>

LB Users Counter

Allows you to add a widget to a sidebar, where you can view some attributes with respect to the number of users browsing the website.

Custom WP Login Widget vs LB Users Counter