LINKDING

A really slick service for sharing files. Sign up with a password and get a link you can add multiple files to and share with someone else to download. I have no idea what the security is like, so I'm not using it for anything sensitive, but if you want to share a few large files with someone, this is great.

Easy and fast file sharing from the command-line. Share up to 10GB, fully encrypted and automatically deleted after 14 days. And free.

Balloon is a drop box for your Dropbox. Share your Balloon to receive files, collect photos from an event, and so much more straight to your Dropbox. There's no signup for senders, and no need for you to manually download files anymore.