procps-ng
procps-ng is the open-source set of Linux command-line and full-screen utilities that report process and system information from /proc, including ps, top, free, kill and sysctl. The programs are licensed under the GPL and the libproc2 library under the LGPL.
Licensing at a Glance
- Open source
The procps-ng project on GitLab is licensed under the GNU General Public License v2.0 or later.[1]
The utilities' source files state they may be redistributed and modified under the GNU GPL version 2 or, at the user's option, any later version.[2]
The library sources are licensed under the GNU Lesser General Public License version 2.1 or any later version, and the repository ships a separate COPYING.LIB file.[3]
procps provides utilities such as free, kill, pgrep, pkill, pmap, ps, slabtop, sysctl, top and uptime that read information from the /proc pseudo-filesystem.[4]
Products
- procps (ps, top, free, vmstat, sysctl)Server Monitoring Software
- libproc2Application Development Software
References
- procps-ng / procps · GitLab · gitlab.com · retrieved 2026-09-27
- procps src/free.c · gitlab.com · retrieved 2026-09-27
- procps library/pids.c · gitlab.com · retrieved 2026-09-27
- procps README.md · gitlab.com · retrieved 2026-09-27