I found only the following in apt-get, but nothing seems to be relevant, then much pure ftp clients. I think sftp is the same as SSH ftp, so scp should do the case, but I would like to have a GUI. I just want to move files to my raspberry pies in local network. apt-cache search sftp | grep sftpgesftpserver - sftp server submodule for OpenSSHlibnet-sftp-foreign-perl - client for the Secure File Transfer Protocollibnet-sftp-sftpserver-perl - Secure File Transfer Protocol Serveropenssh-sftp-server - secure shell (SSH) sftp server module, for SFTP access from remote machinespython-fs-plugin-sftp - Python filesystem abstraction - SFTP accessrssh - Restricted shell allowing scp, sftp, cvs, svn, rsync or rdistruby-net-sftp - Ruby implementation of the SFTP protocolsftpcloudfs - SFTP interface to Rackspace/OpenStack storage servicesvsftpd - lightweight, efficient FTP server written for securityvsftpd-dbg - lightweight, efficient FTP server written for security (debug)OS: Debian 8.7   
What is the default GUI sftp application in Debian?
debian;software installation;sftp
In most modern DEs, the file browser/manager (Nautilus, Nemo, Thunar, Dolphin, etc.) should support SFTP (using GVFS in the case of Nautilus, Nemo, etc., and probably some KDE library for Dolphin). So, use your file browser's address bar (CtrlL in Nautilus, Nemo and Thunar, iirc) and go to sftp://host or sftp://user@host . Any address usable by SSH would work here, and entries in your SSH config file are available.