GKrellM

6.8easy start · #23of 58
in Hardware Monitoring Software

Free to practise onyes
Free trialno
Well documentedyes
Runs where you workyes

Runs on Linux, Mac, Windows.

GKrellM is ranked #23 of 58 in hardware monitoring software on The Geeks Club. It runs on Linux, macOS, Windows. There is a free plan.

GKrellM plans and pricing

All plans

Free software Free GNU General Public License billw2.github.io · 3 Oct 2026

Compared on hardware monitoring software

Free plan: Yes
Supported platforms: Linux, FreeBSD, Mac OS X, NetBSD, OpenBSD, Windows
Remote monitoring: Yes
Custom sensor support: Yes

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The record

Purpose: GKrellM is a single-process stack of system monitors that supports themes matching a window manager, GTK, or other theme.
System monitoring: Built-in monitors include CPU, processes, disks, network interfaces, memory, swap, filesystems, sensors, mailboxes, battery, uptime, and clock/calendar.
Charts and alarms: Charts support automatic or fixed scaling, and sensor and battery monitors can use configurable alarms and warnings.
Plugins: Both GKrellM and gkrellmd support plugins for special-interest monitors; the maker lists community plugins for functions including wireless monitoring, audio control, and SNMP variables.
Themes: GKrellM supports themes, and the official page links to a theme site and theme documentation.
Requirements: The GKrellM application requires GTK 2.0, GDK 2.0, and GLib 2.0; the gkrellmd server requires GLib and can run without GTK or X libraries.
Platform support: The maker describes Linux, FreeBSD, Mac OS X, NetBSD, and OpenBSD builds, and links to a Windows version and installer.
Networking monitor: The built-in Internet monitor displays current TCP port connections and charts historical port hits for over two days.
Mail support: The built-in mailbox monitor checks mbox, maildir, MH, POP3, and IMAP mailboxes and can launch configured mail-related commands.
Security and compliance: The official page states that GKrellM is released under the GNU General Public License and does not state a security certification or compliance standard.
Support: The maker invites users to email Bill Wilson with questions or suggestions and links to a GKrellM mailing list.
Latest listed release: The official page identifies gkrellm-2.3.5.tar.bz2 as the latest release tarball.
Price from: Free

Where it ranks on The Geeks Club

Best Hardware Monitoring Software in 2026#23 of 58

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Sources

billw2.github.io/gkrellm/gkrellm.html· checked 3 Oct 2026
billw2.github.io/gkrellm/Plugins.html· checked 3 Oct 2026