htop - htop - an interactive process viewer for Unix. This is htop, an interactive process viewer for Unix systems. It is a text-mode application (for console or X terminals) and requires ncurses. Latest release: htop 2.
strace - Trace system calls and signals. A diagnostic, debugging and instructional userspace utility.
gtop - System monitoring dashboard for terminal
nmon - This systems administrator, tuner, benchmark tool gives you a huge amount of important performance...
ftrace - A function tracer for the Linux kernel.
Atop - An advanced interactive monitor for Linux-systems to view the load on system-level and...