DMS GX100 Explorer is a Windows utility for owners of the Boss GX-100 guitar effects processor. It allows you to view the detailed settings of your patches on your computer screen. This is particularly useful for understanding the structure of patches created by others, for documenting your own sounds, or for simply getting a clear overview of all parameters without navigating through the menus on the device itself.
- It's free to use.
- View all patch parameters in a clean, organized layout.
- View multiple patches simultaneously.
- Analyze signal chains and effect settings.
- Does not modify any data on your GX-100, ensuring complete safety.
- Easy to use Windows application.
- Select from a multitude of light and dark themes.
- Scale the font size to taste.
GX100 Launcher
The main launcher window of the application.
Settings
Configure application settings and MIDI devices.
Patch Viewer
Detailed view of a patch's parameters and signal chain. The display style is "Ruby Graphite"
Patch Viewer - Alternate Style
The patch viewer supports different display styles. This style is "Charcoal Dark Slate"




This program sends MIDI requests to the GX100, decodes the received MIDI responses from the GX100, and displays them in the viewer.
MIDI data for the patch is loaded into in the viewer and stays there until you close it.
There is zero possibility that the program can damage the GX100 or any of its patches in any way because it never writes anything to the GX100 memory.
This program was coded in Delphi 12.
The Readme.md file in the zip file download describes how to get started.
Visit the Forum to ask questions, see release notes, and get usage tips.
- Principal software engineer for 15 years at a major telecom company and a large printing company.
- Now retired and programs mostly for fun.
- Wrote my first MIDI related program in 1985. It was a MIDI sequencer.
- Wrote a shareware program named WinSysEx which was a generic MIDI synthesizer editor for Windows in 1994.
- Recently wrote open source dmsmidimonitor in Lazarus/Free Pascal available on GitHub. It provides the basis for the MIDI functionality for this GX100 Explorer program.