AivarasFX

FX Gallery Widget adds a widget for displaying gallery for attached images to current page or post, or to a specific post or page by ID. It is used to show images in widget area if they are linked to a page or post, they don’t have to be inserted in page as images. Widget has setting for number of images to display, also displaying order may be set to random.
<h4>Features</h4>
<ul>
<li>Show images from currently displayed page or post</li>
<li>Add as many widgets as you want, wherever you want</li>
<li>Select a number of images</li>
<li>Select any registered size in WordPress</li>
<li>Display the images in ascending, descending, or random order</li>
<li>Link the images to the original file, post, anchor in the post, attachment page, or nothing</li>
<li>Add a prefix to the link and image title (appears as a tooltip)</li>
<li>Use a rel attribute for the link – great for lightboxes</li>
</ul>

FX Gallery Widget

Simple widget for displaying gallery images of current page or post, or from a specific post or page set by ID

Aaron D. Campbell

A widget that displays rotating images from a post’s gallery in the sidebar of 
your site. You just specify the post or page, and it will cycle through all the 
images from the gallery of that post or page. you can have as many of them as 
you want on your site simultaneously. Requires PHP5.
In WordPress 2.6, another plugin of mine has been included into the CORE to 
allow these to be reorder your images to make them display in whatever order you 
prefer. Until then, go get <a href="https://wordpress.org/extend/plugins/reorder-gallery/" rel="ugc">Reorder Gallery</a>!

Gallery Widget Pro

A widget that displays rotating images from a post's gallery in the sidebar of your site. Requires PHP5.

FX Gallery Widget vs Gallery Widget Pro