Denis Buka

This plugin allows you to upload single files or entire directories with subdirectories to your Dropbox account. You can use it for backup, synchronization or whatever uploading tasks you may have.
Features overview:
<ul>
<li>Upload entire directories with subdirectories to your Dropbox account. </li>
<li>Backup your entire site files by pointing to the WordPress installation directory. </li>
<li>Specify a Dropbox folder to which your files should be uploaded. If such folder doesn’t exist it will be created. </li>
</ul>
My other plugins:
<ul>
<li>Intuitive Navigation (https://wordpress.org/extend/plugins/intuitive-navigation/) </li>
<li>Generate Cache (https://wordpress.org/extend/plugins/generate-cache/) </li>
</ul>
Links: <a href="http://steamingkettle.net" rel="nofollow ugc">Steaming Kettle Website Design & Video Production Studio</a>

Drop in Dropbox

Upload single files or entire directories with subdirectories to your Dropbox account.

Katsushi Kawamori

<h4>Organize Media Library by Folders. URL in the content, replace with the new URL.</h4>
<ul>
<li>Organize files into the specified folder.</li>
<li>Can create folders.</li>
<li>Can filter searching by folders.</li>
<li>URL in the content, replace with the new URL.</li>
<li>If you want to add a folder designation function to the media uploader, Please use the <a href="https://wordpress.org/plugins/extend-media-upload/" rel="ugc">Extend Media Upload</a>.</li>
</ul>

Organize Media Library by Folders

Organize Media Library by Folders. URL in the content, replace with the new URL.

Drop in Dropbox vs Organize Media Library by Folders