ostlund

This plugin lets you insert a upload form on your pages so visitors can upload files to a Dropbox account.

Dropbox Upload Form

Inserts a upload form for visitors to upload files to a Dropbox account

Chris Klosowski

Allows you to upload your themes CSS, JavaScript, and Images into your Dropbox ‘Public’ folder and server these files from the Dropbox network, reducing the bandwidth of your server and allowing users to load your site faster. Please note that as of now, this plugin only supports themes who use the filters ‘template_directory’, ‘template_directory_uri’, ‘stylesheet_directory’, and ‘stylesheet_directory_uri’ to determine the paths to the theme’s template and stylesheet files. I would only suggest this plugin for users who aren’t afraid of getting their hands a little diry.
This plugin is in no way affiliated with Dropbox.

Dropbox CDN

Use your Dropbox 'Public' folder as a free Content Delivery Network (or CDN). Please read the full description.

Dropbox Upload Form vs Dropbox CDN