Brian Alexander

Adds the current page’s template name to the admin bar.
Because this plugin reveals potentially sensitive information about the active theme, it is recommended for development environments only, and should not be enabled on a production site.

What Template

Adds the current page's template name to the admin bar.

mapsiter

Simplest admin bar indicator created by <a href="https://www.weblings.co/" rel="nofollow ugc">Weblings</a>, to easily recognise whether you are in Development, Staging or Live environment.

DevStage

Simplest admin bar indicator created by Weblings, to easily recognise whether you are in Development, Staging or Live environment.

What Template vs DevStage