demonisblack

This plugin allows you to add textual annotations to images by select a region of the image and then attach a textual description, the concept of annotating images with user comments. 
Integration with JQuery Image Annotation from Chris (http://www.flipbit.co.uk/jquery-image-annotation.html) with PHP support from GitHub (http://github.com/stas/jquery-image-annotate-php-fork).
<h3>Live Demo:</h3>
<a href="https://www.superwhite.cc/demon/image-annotation-plugin" title="https://www.superwhite.cc/demon/image-annotation-plugin" rel="nofollow ugc">https://www.superwhite.cc/demon/image-annotation-plugin</a>
<h3>Needs Your Support:</h3>
It is hard to continue development and support for this free plugin without contributions from users like you. If you enjoy using demon Image Annotation and find it useful, please consider making a donation. Your donation will help encourage and support the plugin’s continued development and better user support. <a href="https://www.paypal.com/cgi-bin/webscr?cmd=_donations&business=HBKHFYS86E99Q&lc=MY&item_name=demon%20Image%20Annotation%20Plugin&item_number=dia_plugin&currency_code=MYR&bn=PP%2dDonationsBF%3abtn_donate_SM%2egif%3aNonHosted" title="Donate" rel="nofollow ugc">Donate</a>
<h3>Some features:</h3>
<ul>
<li>Option to approve, edit and remove image notes in admin page.</li>
<li>Preview image annotation in admin page.</li>
<li>Auto insert unique id attribute for all the images for image note.</li>
<li>Option to allow image annotation for login user who can moderate comment only</li>
<li>Gravatar in the notes</li>
<li>Option to sync with wordpress comments.</li>
<li>Option to show thumbnail in comment list.</li>
<li>‘Mouseover to load notes’ on top of every image note (editable).</li>
<li>‘Link’ on top of every image note if hyperlink image (editable).</li>
</ul>
<ol>
<li>There’s a new method to exlcude image annotation after version 3, but previous version method id=”img-exclude” still work. </li>
<li>Image preview for admin editing is only support version 3 and above, image note added with previous version will not support.</li>
</ol>

demon image annotation

Allows you to add textual annotations to images by select a region of the image and then attach a textual description.

Andrea Porotti

Using this plugin you can attach notes to some elements in the WordPress dashboard, such as:
<ul>
<li>posts</li>
<li>pages</li>
<li>custom post types from other plugins (except the notes from this plugin)</li>
<li>users</li>
<li>plugins</li>
<li>dashboard sections</li>
<li>the whole dashboard</li>
</ul>
It can be helpfull if you manage a site with other people or just to take notes for yourself.
Features
<ul>
<li>manage notes like the standard posts by opening the Notes page from the admin menu.</li>
<li>while editing a note, use the meta box on the right to set note properties (position, color,…)</li>
<li>manage section and global notes from the admin bar.</li>
<li>manage item notes (eg. posts and pages) from the custom column in the admin pages.</li>
<li>get notes details by hovering the mouse on the “Info” links or clicking on the “I” icons.</li>
<li>add text, images and links in the note content.</li>
<li>deleted notes go to the trash, so they can be restored.</li>
<li>automatically discovers custom post types added by other plugins (eg. events, books…).</li>
<li>creates a list of the dashboard sections based on the admin menu items.</li>
</ul>
Configuration
Settings for the plugin are available on the Settings -> JAMP Notes page.
Please note:
<ul>
<li>by default the plugin data is kept after uninstall. You can choose to delete notes and settings enabling the data removal option.</li>
<li>after activation, the plugin enables notes for all the existing public post types. If you then install other plugins which create new post types, you have to manually enable them in the JAMP settings.</li>
</ul>
Permissions
The notes are currently available only for the users with the “Administrator” role. 
Each Administrator can manage all notes.
Support
If you find any errors or compatibility issues with other plugins, please let me know in the support forum. Thanks!
Privacy
This plugin does not collect or store any user data. It does not set any cookies and it does not connect to any third-party services.

JAMP Notes (Just Another Memo Plugin)

This plugin allows you to attach notes to some WordPress elements like posts, pages, dashboard sections and more.

demon image annotation vs JAMP Notes (Just Another Memo Plugin)