Pluginaid

Adds a dashboard widget displaying a list of users currently logged in to your site. Useful for monitoring live user activity and session management.

Logged In Users

Adds a dashboard widget showing which users are currently logged in.

karlosuccess

This plugin will show a different theme to logged in users.
Your regular visitors will be served one theme, logged in users will be served a different theme.
Simple but effective plugin.
Currently, only working with parent themes, not child themes, but it is in the TODO list.
For screenshots please visit <a href="https://KMBytes.com" rel="nofollow ugc">www.KMBytes.com</a>.

KM Different theme to logged in users

The best solution to show a different theme to logged in users.

Logged In Users vs KM Different theme to logged in users