DropboxCLI is a command-line tool for interfacing with Dropbox.
Building it requires Qt, particularly QtCore, QtNetwork and QCrypto.
OAuth support comes courtesy of KQOAuth, whose source is included.
Usage: DropboxCLI -[ald] <path>
-a <email> <password> Authenticate. This only needs to be done once, or when changing users. The token is stored on disk in local settings (on Linux, ~/Settings)
-l <path> Get metadata info at <path> (returns JSON object, see the Dropbox API documentation for a schema)
-d <path> Download file at <path>
-c List the email address that's been authenticated against