Are you trying to or publish your own creation to the Steam Workshop?
: A modern, cross-platform GUI wrapper for Windows, macOS, and Linux. gma_tools.exe
Use the "Create" or "Publish" function in the tool to select your folder and compile it. Are you trying to or publish your own
A "gma_tools.exe" (often associated with or GMAT tools) is a utility used to create, extract, and manage .gma files for Garry's Mod . These tools provide a user-friendly interface for the standard command-line tools gmad.exe and gmpublish.exe . Key Features of GMA Tools cross-platform GUI wrapper for Windows
If you are looking for specific functionality, other popular community tools include: : A specialized tool for unpacking 3D models.