SFTP Server s0 v1 is an Android Secure File Transfer Protocol Server App compatible with all Android devices down to Android Version 4.4/5.0* KitKat/Lollipop* (API Level 19/21*) covering more than 99.9% of all android devices world-wide.
*)Mounting of drives (document providers) & directories using Android Scoped Storage requires at least Android Version 5.0 Lollipop (API Level 21)

SFTP Server s0 v1 offers automatic public key handling according to preference settings.

SFTP Server s0 v1 has been tested and is working well with different SFTP Client applications like: SSHFS (network file-system mount for: Linux Mac Windows) GIO/GVfs (virtual file-system mount for: Linux) SFTP (Linux-Client Windows/Cygwin) FileZilla (Windows- Mac- Linux-Client) WinSCP (Windows-Client) PSFTP (Putty SFTP Windows-Shell) Cyberduck (Windows- & Mac-Client) Mountain Duck (Windows- & Mac-Client) Total Commander SFTP Plugin (Windows-Client).

SFTP Server s0 v1 is purely Java based (no 3rd party and native libraries) and therefore portable on different platforms and operating systems.

SFTP Server s0 v1 is based on the following RFC Specifications: SSH File Transfer Protocol Version 3 The Secure Shell (SSH) Protocol Architecture The Secure Shell (SSH) Transport Layer Protocol The Secure Shell (SSH) Authentication Protocol and The Secure Shell (SSH) Connection Protocol.