procps-ng is a fork of the procps project.
This project provides command line and full screen utilities for browsing procfs, a "pseudo" file system dynamically generated by the kernel to provide information about the status of entries in its process table (such as whether the process is running, stopped, or a "zombie").
It contains free, kill, pkill, pgrep, pmap, ps, pwdx, skill, slabtop, snice, sysctl, tload, top, uptime, vmstat, w, and watch.
Compared to procps, source code of procps-ng has been significantly cleaned up and opened to enhancements. This should become the main stream. Many thanks!