Andreas Software
Free programs for Windows by Andreas Jönsson


AS-File Transfer 6.0 - Encrypted file-sharing program for Internet/LAN.

AS-File Transfer 6.0
Screenshot of AS-File Transfer 6.0

An encrypted file-sharing program for computer-to-computer, either over the Internet or inside the LAN. The client program sends the files and the server program receives them. A password is required to send files to the server. Can resume interrupted transfers. Communicates with TCP through port 4520. (Note: The recipient of files has to make sure that the port that the server listens on is open all the way.)


  • The transfers are protected with 512-bit ARC6-64/24/64 encryption.
  • Displays information such as current progress, speed and remaining time.
  • The server can receive files from multiple clients simultaneously.
  • The port that the server listens on can be changed, then add the port number as a parameter to AS-FILE-TRANSFER-SERVER.EXE. E.g. Run => "C:\Andreas Software\AS-FILE-TRANSFER-SERVER.EXE" "4521" => OK.

> Download AS-File Transfer 6.0 (Zip, 2.55 MB)

Revision Date: See file date.
License: Freeware.
Unicode Support: Yes.
Program Type: Portable, x64.
Operating System(s): Windows 7 (SP1+), 8.1 and 10. (Also Windows Server 2012 R2 and 2016.)
Language(s): English and Swedish.

This is the program's official website - download the program here to get the latest version/revision. The program is free.


Keep in mind that all participants must use the same version.

Is the encryption a bottleneck?

On my computer, with the processor Intel Core i3-2120, the programs are able to encrypt approximately 56 MB/sec. which is the same as 448 Mb/sec. Therefore, I need to have more bandwidth than 448 Mb/sec. in order for the encryption to be a bottleneck. My computer is a standard office computer from 2012.

Copyright © 1998-2019, Andreas Jönsson. All rights reserved.

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