Adam Walter

<p>Admin Notice is a very simple plugin that allows you to display custom notices in the WordPress admin that is visible to all users.</p>
<p>Control over the notice text and styling is available from the plugin’s settings page.</p>
<p>Developers can use the <code>admin_notice_enable</code> hook to control the notice’s visibility on a more granular level. The following example demonstrates how to show the notice only in the “Posts” area of the admin.</p>
<pre><code>add_filter('admin_notice_enable', function($enabled) {

    $screen = get_current_screen();

    if (isset($screen->post_type) && $screen->post_type !== 'post') {
        $enabled = false;
    }

    return $enabled;

}, 10, 1);
</code></pre>


Admin Notice

Nice Plugin!

Display a custom notice to all users in the WordPress admin.

Blackbam

<p>This Plugin improves the search for users in the WordPress backend significantly. It empowers admins to search for the first name, last name and email address of users instead of only their nicknames/nicenames.</p>
<p>It is also possible to search for custom user meta fields now.</p>
<p>Translations: English, German, Swedish</p>
<p>Plugin Homepage: http://www.blackbam.at/blackbams-blog/2011/06/27/wordpress-improved-user-search-first-name-last-name-email-in-backend/<br />
Special characters like quotes are escaped, problems with the query may apper when trying to search for other non-alphanumeric characters.</p>
<h3>1.2.4</h3>
<ul>
<li>Added translations and il8n (Mikael Grön <a href="mailto:jag@mikaelgron.se" rel="nofollow ugc">jag@mikaelgron.se</a>)<br />
(en_US, en_UK,sv_SE)</li>
<li>Added german translation (de_DE)</li>
</ul>
<h3>1.2.3</h3>
<ul>
<li>Database compatibility improved.</li>
</ul>
<h3>1.2.2</h3>
<ul>
<li>Re-allowed special characters in keys, but strings are still escaped for safe queries.</li>
</ul>
<h3>1.2.1</h3>
<ul>
<li>Filter and test custom meta fields. Remove unallowed characters.</li>
</ul>
<h3>1.2.0</h3>
<ul>
<li>Added Case-insensitive matching.</li>
<li>Added Multisite support.</li>
</ul>
<h3>1.1.2</h3>
<p>Fix issue where attempting to activate the plugin would throw an “Invalid Header” error</p>
<h3>1.1.1</h3>
<p>Minor changes.</p>
<h3>1.1</h3>
<p>Added options page to include custom user meta fields in the search.</p>
<h3>1.0.1</h3>
<p>Little code improvements.</p>
<h4>1.0</h4>
<p>Initial release to the Plugins directory.</p>


Improved user search in backend

Improves the search for users in the backend significantly: Search for first name, last, email and more of users instead of only nicename.

Admin Notice vs Improved user search in backend