Josh Eaton

A small plugin that lets you “hide” the front-end of a site, all front-end requests of logged-in users are redirected to the WP Dashboard (filterable).
Useful mainly for developers, if you’re developing a site and want to give users access to see the dashboard while you’re working on the front-end. Also can be used if you have a site with no front-end and always want users to stay on the dashboard.
Filters included:
<ul>
<li><code>rfe_redirect_caps</code>: Control capabilities required to bypass redirect, lets Administrators access front-end by default (default: <code>manage_options</code>) </li>
<li><code>rfe_redirect_url</code>: Change the redirect URL (default: <code>admin_url()</code>)</li>
</ul>

Redirect Front-end

A small plugin that lets you "hide" the front-end of a site, redirecting to the WP Dashboard.

Mark Howells-Mead

Adds a new column to the WordPress admin post list view, containing a preview of the post’s featured image (where available).
<h3>Hooks</h3>
Developers can use the <code>mhm-list-postthumbnail/exclude_posttype</code> filter to exclude the post thumbnail column from certain post types as required. The filter accepts and returns an array.

Add post thumbnail to wp-admin list view

Adds a new column to the WordPress admin post list view, containing a preview of the post's featured image (where available).

Redirect Front-end vs Add post thumbnail to wp-admin list view