Justin Ahinon

WordPress Media Assistant is a plugin that displays useful information about your media library as the number of images, 
the format, the upload date, etc…
Credits
<a href="https://segbedji.com/" title="Justin Sègbédji Ahinon" rel="nofollow ugc">Justin Sègbédji Ahinon</a>, WordPress Developer and Core Contributor. <a href="https://github.com/JustinyAhin" title="@JustinyAhin on Github" rel="nofollow ugc">Github</a>.
Add your own language pack on GlotPress or do pull requests on <a href="https://github.com/JustinyAhin/wp-media-assistant" title="Plugin repo on Github" rel="nofollow ugc">Github</a>. Contributors will be credited here 🙂

WP Media Assistant

Display useful informations about WordPress media library.

MatthewRuddy

Rocket Galleries is the gallery manager WordPress never had. Easily create and manage galleries from one intuitive panel within WordPress. Simple, easy to use, and lightweight. Some of the features include:
<ul>
<li>Lightweight, with no Javascript needed and minimal CSS at less than 0.3kb!</li>
<li>Bulk image uploading, integrated with new WordPress Media Library</li>
<li>A built in template loader, allowing you to create your own gallery templates for your theme</li>
<li>Developer friendly, with huge scope for customization using built-in actions & filters</li>
</ul>
Follow & contribute to this plugin on <a href="https://github.com/rocket-galleries/rocket-galleries" rel="nofollow ugc">Github</a>.
The modern, straight forward interface is built to fit right into the WordPress admin area. It’s built to feel like native WordPress functionality, not a plugin, which is great for impressing clients and instantly feeling familiar with the plugin’s admin area. Simple, just the way we like it.
Rocket Galleries is also developer friendly. We’ve made it easy to integrate the plugin with your theme by including a template loader. This allows you to create your own gallery templates and use your own HTML, CSS and Javascript easily. We’ve also included dozens of filters and actions within the plugin’s code, allowing you to hook into the core and create your own Rocket Galleries extensions. The possibilities are limitless!
Last but not least, Rocket Galleries is a very new plugin, so we look forward to your feedback. Over the next couple of months we’re hoping to rapidly develop it’s functionality, so feel free to use the <a href="https://wordpress.org/support/rocketgalleries/" rel="ugc">Support Forums</a> to make feature suggestions and feedback.

Rocket Galleries

Rocket Galleries is the gallery manager WordPress never had. Easily create and manage galleries from one intuitive panel.

WP Media Assistant vs Rocket Galleries