PARCP software for either PARCP-USB or PARCP (LapLink) cable
PARCP 4.2.1 - binaries for Apple, Atari, DOS, Linux and Windows
PARCP 4.2.1 for Raspberry Pi - just binary for Raspbian 10 Buster
PARCP source code is available on GitHub
Allows you to transfer programs into your Atari's memory and directly execute them without first needing to write to disk. Details in Atari Forum.
If there are any problems downloading these files please let me know. Thanks!