Apple has open-sourced GCGC, a tool for Java Garbage Collector (GC) logs visualization based on Python 3 and pandas. GCGC uses a Jupyter notebook to analyze and visualize GC log files.

You can use it to analyze log files from any application, in any format, whether supported by Addamark or not, but it requires significant skill to do so.

Log files offer a wealth of information about system and user functions. They also provide a safe way to get started analyzing large data sets.