Dragshare - Drag files to your menubar and share the Dropbox link
Send to Dropbox - Email attachments to a Dropbox folder
Losha - Easily share Dropbox files and folders in your menu bar
Get My Receipts by cloudHQ - Organize your receipts in one click
Apple Keynote - Apple Keynote or just Keynote is an advanced level presentation software application created as a part of the iWork productivity suite by Apple Inc.
OneBox.io - Sync e-mail attachments to GDrive, Dropbox, Box, or OneDrive