SWI-Prolog -- gtrace/0

Documentation
- Reference manual
  - Initialising and Managing a Prolog Project
    - The Graphical Debugger
      - Invoking the window-based debugger
        
        guitracer/0
        
        noguitracer/0
        
        gtrace/0
        
        gdebug/0
        
        gspy/1
- Packages

Availability::- use_module(library(gui_tracer)).(can be autoloaded)

Source

Utility defined as guitracer,trace.