Strictly speaking, Motorola software is proprietary. However, since the GM338 is a legacy model, many users rely on community-shared archives for maintenance. Hardware Requirements for Programming
Includes "fixes" that allow the software to run on 64-bit operating systems. motorola gm338 programming software free repack
If you are looking to get started, I can help you find the specific or explain how to set up MDC1200 signaling for your fleet. How to bypass the regional mismatch error ? How to update the firmware on your GM338? Strictly speaking, Motorola software is proprietary