Chefed70

I used to use the Hotline Client and Server suite to transfer files between a few friends across the country. Is there anything out there similar nowdays (pitbull pro, KDX , Freenet) that is similar OR , Do I need to set up a FTP site, file server or VPN to exchange files (via username and password) between 3-4 people? Any help out there? , Thank you. Chefed