Is there any WinSCP equivalent for linux?

If you're using Gnome, you can go to: Places -> Connect to Server in nautilus and choose SSH. If you have a SSH agent running and configured, no password will be asked! (This is the same as sftp://root@servername/directory in Nautilus)

In Konqueror, you can simply type: fish://servername.

per Mike R: In Ubuntu Unity 14.0.4 its under Files > Connect to Server in the Menu or Network > Connect to Server in the sidebar

Filezilla is available for Linux. If you are using Ubuntu:

sudo apt-get install filezilla

Otherwise, you can download it from the Filezilla website.

I use FileZilla and it works fine with SFTP (SSH File Transfer Protocol). Follow these steps to install it and configure it:

1. Install FileZilla via terminal:

sudo apt-get install filezilla

2. Open the program and go to File -> Site Manager... or simply type Ctrl+S

3. The following window should appear:

4. Enter the name of your host, select the port (usually 22 for ssh/scp/sftp) and choose SFTP - SSH File Transfer Protocol as protocol and optionally set the Logon Type to Normal if authentication is needed, resp. enter your data.