H. Peter Pfeufer

Provides a setting to show or hide the new admin bar in WordPress 3.1

Show/Hide Adminbar in WordPress 3.1

Provides a setting to show or hide the new admin bar in Wordpress 3.1

z720

This plugin tries to enable previous feature present in DashBar in the new WordPress Admin Bar.
No more options, only contextual links missing in the admin bar:
<ul>
<li>Choose from the list of posts displayed to edit one</li>
</ul>
Network admin is also accessible from the first menu
No more localization required as this plugin uses core WordPress text.
WARNING: This plugin requires PHP 5.

DashBar

This plugin tries to enable previous feature present in DashBar in the new Wordpress Admin Bar.

Show/Hide Adminbar in WordPress 3.1 vs DashBar