Kevin Langley Jr.

Add widgets on a post by post basis by using a new interface directly on the post edit screen.
Filter to set the post types the Post Widgets plugin should load on post_widget_post_types

Voce Post Widgets

A better interface for managing your widgets.

snapwidget

SnapWidget Social Photo Feed Widget is an easy way to embed your Instagram photos and videos on your website or blog to display your photos. The widget offers the same functionality and customization available for widgets embedded from <a href="https://snapwidget.com" title="Instagram widget" rel="nofollow ugc">SnapWidget</a>. Supports the Instagram Basic Display and Graph API’s.
Features
<ul>
<li>Simple and easy to use</li>
<li>Multiple layout options (Grid, Board, Scrolling, Slideshow and Map)</li>
<li>Secure, supports HTTPS websites</li>
<li>Refreshes with new photos every 15 minutes (5 minutes for Pro widgets)</li>
</ul>
Pro Features
<ul>
<li>Hashtag Widgets</li>
<li>Widget Analytics</li>
<li>Shoppable features</li>
<li>Add your own custom CSS</li>
<li>Display photos in a lightbox</li>
<li>Previous / Next buttons to display older content</li>
<li>Creating widgets for other users</li>
</ul>

SnapWidget Social Photo Feed Widget

The widget requires connection to an external (non-instagram) site in order to simply display the Instagram photos.

Poor

SnapWidget Social Photo Feed Widget is an easy way to embed your Instagram photos and videos on your website or blog to display your photos.

Voce Post Widgets vs SnapWidget Social Photo Feed Widget