Procman is a native process explorer for Mac that combines the hierarchy of pstree with the clarity of Activity Monitor. It shows a live parent-child tree so you can actually understand what spawned what, what’s consuming resources, and how everything fits together.
A few things it does:
Live process tree with parent-child relationships
CPU, memory, disk, network, and energy stats
Detailed inspector for individual processes
Configurable menu bar companion
Kill and restart process actions