Irixstat
From TechPubs Wiki

irixstat is a program under development by Raion of IRIX Network that acts as an ncurses-based osview clone for IRIX.
Program Overview
At the top each load average is printed on its own line, then total RAM of the system, then free RAM, CPU usage graph with delta calculations and a graph for memory usage. Below that, a top process chart.
As of 2026, irixstat does not perform any process management or system management tools. It's merely a viewer.
Building irixstat
irixstat is packaged in nekoware, however it is buildable as well. To do so, install ncurses, download the code, and adjust the Makefile.