Couchdrop is a cloud SCP server, which means files can be downloaded using the SCP tool packaged with openssh on virtually any unix derivative.
With Couchdrop you can turn you Dropbox into a SCP server simply by linking it as a storage provider to your Couchdrop account. Once linked, you can transfer files to and from your Dropbox with SCP on any server without having to install the Dropbox app.
Create a Dropbox Account
Before starting you need a Dropbox account. This can easily be created by visiting http://dropbox.com.
Link Dropbox to Couchdrop
To link your Dropbox account to Couchdrop, first login to Couchdrop by visiting https://my.couchdrop.io.
Once logged in, click Storage on the navigation menu.
If you have not used Couchdrop yet, you will not see any Storage Buckets. We now need to create a new Storage Bucket for Dropbox. You can create as many storage buckets as desired, and associate different permissions and paths for each.
Click Add Bucket and you will be presented with options to configure a bucket.
Here you need to specify a destination path, permission mode and bucket type. The path is what identifies this specific storage bucket when you are downloading or uploading files. For our example, we will leave it as "/" and we will configure the bucket type as "Dropbox".
Once you are happy, click Link Dropbox. This will take you to Dropbox's OAuth page.
If you are not already logged in with Dropbox, login.
Dropbox will ask for your permission to Allow Couchdrop. Click Allow and you will be returned to your Couchdrop account.
Once returned to Couchdrop, click Save Settings and you are done.
Your dropbox account will now work perfectly with Couchdrop. You can begin transferring files to and from Dropbox with Couchdrop.