The winscp.exe executable is the main one.

What you can do with it:

• When run, it starts by default in GUI mode, showing the Login dialog;
• Using the command-line options, it can be started in console mode;
• It can be used to execute scripts without showing any window (by omitting /console parameter).

The winscp.com executable is a simple tool that internally runs winscp.exe and provides console interface for it. Its primary purpose is scripting.

What you can do with it:

• Supports console mode only, but allows input/output redirection;
• When run from another console application (such as standard Windows console/command-line window, i.e. cmd.exe), it inherits its console.1

The .com executable needs the .exe one to operate. It looks for it in the same directory where it is located itself. The .exe must have exactly the same name.

As WinSCP is an Unicode application, you should use a TrueType console font with a full Unicode support, like “Consolas” or “Lucida Console”.

For input/output redirection use standard operators:

• > for output redirection;
• < for input redirection;
• | for piping.

You can also use input/output redirection when running winscp.com from another application. For example see Guide to SFTP transfers in .NET.