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Apple Disk Transfer ProDOS is a feature-rich communications platform for exchanging disks and disk images between the Apple II and Apple /// family computers and the modern world.

ADTPro has two main purposes in life:

  • Transferring Apple disk images
  • Bootstrapping Apple II computers when boot diskettes are long gone

ADTPro uses any of three communications mechanisms:

  • Serial (RS-232, USB) hardware
  • A2Retrosystems "Uthernet" LANceGS Ethernet card
  • Audio/Cassette ports

Bootstrapping chores can occur with zero software at the Apple II end

What's New

Version 2.0.1:
New functionality
  • [Audio] Client sends test stream of data for volume tuning on host side
  • [Server] Text bootstrapping data is packed more densely for faster transfer
Bug fixes
  • Server and client agree on more situations where a transfer should be aborted
  • [Client] Don't hang on a GS on startup if a connection isn't


  • OS X 10.3.9 or later
  • Java

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Apple Disk Transfer ProDOS User Discussion

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Current Version (2.x)


Downloads 10,346
Version Downloads 372
License Free
Date 23 Mar 2015
Platform Intel 64 / OS X / PPC 32 / Intel 32
Price Free
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