Benachi

Open the admin bar “view site” link in a new tab. No need for the right-click. You can check your website quickly while updating.

Open Admin View Site in New Tab

Open the admin bar "view site" link in a new tab. No need for the right-click. You can check your website quickly while updating.

Lee Willis

Always shows the admin bar if the user has previously logged in to the site. 
Non logged in users will see the bar in the normal place, complete with a login link.
Note: This plugin is no longer supported. The plugin is available for forking and contribution over on <a href="https://github.com/ademti-software/always-show-admin-bar/" rel="nofollow ugc">GitHub</a>.

Always Show Admin Bar

I had to debug a website and the premium theme was hidding the admin bar which I wanted to use for Debug Bar and Theme Template Debugger.

This plugin solve this issue !

Very useful !

Always shows the admin bar if the user has previously logged in to the site.

Open Admin View Site in New Tab vs Always Show Admin Bar