Upspace (http://hello.upspace.co) for OS X is a handy menubar uploader for Dropbox. Using the Dropbox infrastructure, it was built specifically for those who need to share a lot of screenshots and files during the day.
Upspace helps you to share images and files, generate accurate links and track all views. The app provides you with a short link automatically copied to your clipboard so that you can use to share your upload with co-workers and friends. Simply choose a file and drag it to the menubar. There’s no need to pay monthly payment to other sharing services, if you already use Dropbox.
Features include: quick file sharing via menubar; short links; a views counter; multiple files that are zipped automatically; a sharing page; and a Cmd Shift 5 option for screenshot upload.
Upspace for Dropbox costs $3.99 and is available through the Mac App Store in the Productivity category. It requires Mac OS X 10.10 or higher.