SoftEther VPN ("SoftEther" means "Software Ethernet") is one of the world's most powerful and easy-to-use multi-protocol VPN software.
For more information:
SoftEther VPN Project website can be found at https://www.softether.org/
This app is only a contribution to the SoftEther VPN Project and it is still under testing stage.
My SoftEther VPN build source can be found at GitHub (https://github.com/lfasmpao/softethervpn-android)
Note: This app requires ROOT access.