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Mustafa Uysal

AppThemes

By default, when a visitor accesses your site, the admin bar is not shown. This makes sense for a blog, where you’re the only one that has an account.
However, if you’re running a site where most visitors need to be logged in before doing anything useful, you probably want to make it as easy as possible for them to log in or register.
This is what this plugin is for: it shows the login form right there in the admin bar, so that users don’t need to load another page just to enter their username and password.

Admin Bar Login

Show login form in the admin bar for non-logged-in users.

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.

Admin Bar Login vs Disable Toolbar