You will find in this web site some information on this Open Source project named Waarp, fully in Java.
For details, please go to Waarp Central Site https://waarp.github.io/Waarp/
The global license is GPL V3.
Waarp is a project that provides, among other packages, an open source massive file transfer monitor in Java. Its goal is to unify several protocols (FTP, SSH, HTTP and proprietary protocols) in an efficient and secured way. Its purpose is to enable bridging between several protocols and to enable dynamic pre or post action on transfer or other commands.
See unique package in 
Support is available through community and also through commercial support with the company named Waarp
- Installation and parameters
- Integration, additional development
- Support, maintenance, phone support