Michael Dance

This humble plugin adds an option in Settings > General that controls who sees the WP Toolbar when viewing your site.
You can turn the Toolbar on or off per user role.
Note that this controls the public, front-end version of your site. When viewing the dashboard, the toolbar always appears.
How is this different from other plugins that do similar things? It’s smaller, cleaner, and doesn’t add any unnecesary settings pages. It’s also smart enough to hide the Toolbar option on user profiles if that user is already restricted from seeing the toolbar.

Disable Toolbar

Control who sees the WP Toolbar when viewing your site.

netdesignr

This super light weight plugin helps WordPress users hide the admin toolbar completely or partially within seconds.
The plugin comes with three options: 
1. Hide from all 
2. Hide from all except Administrators 
3. Hide from Administrators except other users
Major features in RA Toolbar include:
<ul>
<li>Show/Hide admin toolbar</li>
</ul>

Remove Admin Toolbar


Great for those sites that have users logging into the site, but they don't need the admin bar as everything is done via the menus


Great plugin if you don't want WP bar across the top

Remove Admin Toolbar helps you hide the admin toolbar completely or partially within seconds.

Disable Toolbar vs Remove Admin Toolbar