andreyk

It may be useful when you need to attach many images to the same post. This plugin divides your wordpress gallery into several dynamic pages. It can works in two ways: modifying the <code>[gallery]</code> shortcode output or do not affect it when you use <code>[pgallery]</code> shortcode instead. The following settings of the plugin are available: number of images per page, hide or show edit attachment link, and the same as in standard wordpress gallery: number of columns, preview size, link from preview, tags of items, captions and previews, sort order, exclude some attachments.
Note that if you set the plugin to [pgallery] mode then you may use both [gallery] and [pgallery] shortcodes in your blog. For instanse, you may apply another plugin to replace standard [gallery] output. When activating first, the Paged Gallery plugin is set to [gallery] mode.
<h3>Sample</h3>
Here is a sample of using this plugin <a href="http://andrey.eto-ya.com/chernihiv-photo" title="Chernihiv: city and historical places" rel="nofollow ugc">Chernihiv Photos</a>.

Paged Gallery

Divides your wordpress image gallery into several pages.

gm_alex

This release is a beta release, so error could occur. If you notice an issue please create a issue here: https://github.com/GM-Alex/user-access-manager-nextgen-gallery-extension/issues 
This plugin allows you to use the <a href="https://wordpress.org/extend/plugins/user-access-manager/" rel="ugc">User Access Manager</a>-Plugin to control the access for the <a href="https://wordpress.org/extend/plugins/nextgen-gallery/" rel="ugc">NextGEN Galley</a>-Plugin. You can lock Albums, Galleries and Images.
Feature list
<ul>
<li>Hide albums (if no access)</li>
<li>User-defined album content (if no access)</li>
<li>Hide galleries (if no access)</li>
<li>User-defined gallery title (if no access)</li>
<li>User-defined gallery content (if no access)</li>
<li>Hide images (if no access)</li>
</ul>

User Access Manager – NextGEN Gallery Extension

With this plugin you can use the "User Access Manager" to control the access for the "NextGen Gallery".

Paged Gallery vs User Access Manager – NextGEN Gallery Extension