Teleconsole - Teleconsole is a free service to share your terminal session with people you trust.

Dropbox - Online Sync and File Sharing

Pagekite - Bring your localhost servers on-line.

Box - Box offers secure content management and collaboration for individuals, teams and businesses, enabling secure file sharing and access to your files online.

ngrok - ngrok enables secure introspectable tunnels to localhost webhook development tool and debugging tool.

WeTransfer - WeTransfer is a free service to send big or small files from A to B.