scribu

This plugin adds a dropdown with all the plugin author names. When you select an author, only those plugins remain visible.
Links: <a href="http://scribu.net" rel="nofollow ugc">Author’s Site</a>

Filter Plugins

Allows you to quickly filter plugins by author in the admin.

wpseek

Better Plugin Compatibility Control makes it easy for the blog administrator to check compatibility of all installed plugins. The plugin adds version compatibility info to the plugins page to inform the admin at a glance if a plugin is compatible with the current WP version and PHP version. Until now you had to look it up on the respective plugin page. It’s now up to the admin wether to deactivate a non-compatible plugin or not.
Included languages:
<ul>
<li>English</li>
<li>German (de_DE) (Thanks to me ;-))</li>
<li>Finnish (fi_FI) (Thanks to C. Hellberg for contributing finnish language)</li>
<li>Belorussian (by_BY) (Thanks for contributing belorussian language goes to <a href="https://www.fatcow.com" rel="nofollow ugc">Marcis Gasuns</a>)</li>
<li>Russian (ru_RU) (Thanks for contributing russian language goes to <a href="https://www.ipower.com" rel="nofollow ugc">iPower</a>)</li>
<li>Uzbek (uz_UZ) (Thanks for contributing uzbek language goes to <a href="https://www.comfi.com" rel="nofollow ugc">Alexandra Bolshova</a>)</li>
<li>French (fr_FR) (Thanks for contributing french language goes to <a href="https://www.tolingo.com" rel="nofollow ugc">tolingo translations</a>)</li>
<li>Spanish (es_ES) (Thanks for contributing spanish language goes to nomeconsumas.org)</li>
<li>Hebrew (he_IL) (Thanks for contributing hebrew language goes to Atar4U / https://profiles.wordpress.org/ahrale/)</li>
<li>Simplified Chinese (zh_CN) (Thanks for contributing simplified chinese language goes to 斌果)</li>
<li>Italian (it_IT) (Thanks for contributing italian language goes to venerdi)</li>
</ul>
<a href="https://twitter.com/wpseek" title="Developer on Twitter" rel="nofollow ugc">Developer on Twitter</a>
Looking for more WordPress plugins? Visit <a href="https://www.schloebe.de/portfolio/" rel="nofollow ugc">www.schloebe.de/portfolio/</a>
<h4>Licence</h4>
This plugins is released under the GPL, you can use it free of charge on your personal or commercial blog.

Better Plugin Compatibility Control

Adds version compatibility info to the plugins page to inform the admin at a glance if a plugin is compatible with the current WP and PHP version.

Filter Plugins vs Better Plugin Compatibility Control