Created to be installed behind the firewall on private servers, YouTransfer aims to empower organisations and individuals that wish to combine ease-to-use file transfer tooling with security and control.
You can watch a live demo at http://demo.youtransfer.io
If you want to see it in action on your own environment, you can use the Docker image (https://hub.docker.com/r/remie/youtransfer/) or NPM package (https://www.npmjs.com/package/youtransfer)