nmon

6.8easy start · #12of 26
in Process Monitoring Software

Free to practise onyes
Well documentedyes
Runs where you workno

Runs on Linux, self-hosted.

nmon is ranked #12 of 26 in process monitoring software on The Geeks Club. It runs on Linux, Self-hosted. There is a free plan.

nmon plans and pricing

All plans

nmon for Linux Free Linux performance monitoring · on-screen or CSV output · GNU GPLv3 sourceforge.net · 8 Oct 2026

Compared on process monitoring software

Free plan: Yes
Supported platforms: Linux on POWER, x86, x86_64, mainframe, and ARM
Activity logs: Yes

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The record

Purpose: nmon is a systems administration, tuning, and benchmark tool that collects performance information.
Live display: It displays performance data in a terminal using curses, with keyboard controls for enabling or disabling data types.
Data collection: It can save performance data to a comma-separated file for analysis and longer-term capture.
Metrics: Displayed metrics include CPU, memory, network, disks, filesystems, NFS, top processes, and—in the Linux version—resources and processors.
Analysis tools: The site describes nmonchart for turning output into webpage graphs and nmon Analyser for loading output into an Excel spreadsheet and creating graphs.
Supported Linux builds: The download page lists binaries for POWER and x86/AMD64 Linux distributions, plus separate mainframe Linux builds.
Build requirements: For a Linux platform or distribution without a matching binary, the site says to compile from source using GCC and the ncurses development library.
Version support: The download page says the maintainer supports versions 16p, 16q for Mainframe, and 16s.
License: SourceForge lists the Linux project under the GNU General Public License version 3.0 (GPLv3).
Integrations: The project page describes njmon injectors for adding JSON data to InfluxDB and Splunk, and real-time graphing with InfluxDB and Grafana.
Intended audience: SourceForge lists advanced end users, developers, and system administrators as the intended audience.
Platform distinction: The site says nmon for AIX is integrated into the AIX topas command and is not open source.
Founded: 2009
Price from: Free

Where it ranks on The Geeks Club

Best Process Monitoring Software in 2026#12 of 26

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Sources

nmon.sourceforge.io/pmwiki.php· checked 8 Oct 2026
nmon.sourceforge.io/pmwiki.php· checked 8 Oct 2026
sourceforge.net/projects/nmon/· checked 8 Oct 2026
nmon.sourceforge.io· checked 28 Sept 2026