DROPitTOme - Allows you to let others securely upload files to your Dropbox account.
Subreddit Stats - Statistics for every subreddit.
File Request Pro - Collect and receive file from anyone in a quick, simple and secure way. File request links and secure, branded upload pages that go straight to Google Drive, OneDrive, Dropbox or your Email.
Redective - Find information about Reddit users
dbinbox - dbinbox makes it easy to send files
Reddit Metis - show stats and analysis of a given reddit user