Best Open-Source Partition Managers 2026: 6 Options Compared

Partition managers resize, move, create and delete the sections of a disk, and getting it wrong can destroy data, so the open-source choices differ more in friendliness than in capability. GParted is the standard graphical tool: it handles most common Linux and Windows file systems and is usually run from a live USB so the disk is not in use. KDE Partition Manager does a similar job in the KDE environment and GNOME Disks is the quick built-in option on GNOME for formatting drives and simple partitioning. GNU Parted and the fdisk and cfdisk tools from util-linux are command-line options that are available on nearly every Linux system, which makes them the right tools for servers and recovery shells. The trade-off is power against safety. Graphical tools give a preview of changes before you apply them, while command-line tools act as you type. Before resizing a partition, back up important data. Moving or shrinking the partition that holds your operating system is the riskiest operation, and a power cut mid-resize can corrupt a file system. Use a live USB, plug in a laptop charger, and apply the planned operations once, rather than in several rounds. If you only need to format a USB drive, a simple disk utility is enough and you can leave partition managers alone.

GParted

GPL-2.0-or-later graphical partition editor, usually run from a live USB. The standard tool for resizing and moving partitions.

Price: Free (Free software, no payment needed) (GParted pricing, checked 2026-10-24).

Platforms and license: Boots from GParted Live (x86-64) on Linux, Windows or Mac OS X machines, Runs inside Linux. GPL-2.0 or later (open source) (license source).

Best for: Most partitioning jobs.

KDE Partition Manager

GPL-3.0-or-later partition tool for KDE with a graphical interface. A natural fit on KDE desktops.

Price: Free (KDE application; the page shows no price and links to the source code) (KDE Partition Manager pricing, checked 2026-10-24).

Platforms and license: Linux. GPL-3.0 or later (open source) (license source).

Best for: KDE users.

GNOME Disks

GPL-2.0 disk utility from GNOME for formatting and basic partition work. Lighter than GParted, with fewer resize options.

Price: Free (Free open source) (GNOME Disks pricing, checked 2026-10-24).

Platforms and license: Linux. GPL-2.0 (open source) (license source).

Best for: Quick formatting on GNOME.

Worth knowing: Disk utility from the GNOME project; the COPYING file is GPL version 2.

GNU Parted

GPL command-line partition editor available on most Linux systems. It applies changes as you type, so double-check each command.

Price: Free (Free open source) (GNU Parted pricing, checked 2026-10-24).

Platforms and license: Linux. GPL (open source) (license source).

Best for: Servers and scripts.

NTFS-3G

GPL-2.0 NTFS driver and utilities for Linux; the repository includes the ntfsresize source for shrinking or growing NTFS volumes. Command line only, and limited to NTFS.

Price: Free (Free open source) (NTFS-3G pricing, checked 2026-10-24).

Platforms and license: Linux. GPL-2.0 (open source) (license source).

Project activity: 1.5k GitHub stars · latest release 2026.9.28 (Sep 29, 2026) · last commit Sep 29, 2026

Best for: Resizing NTFS volumes from Linux.

util-linux

GPL-2.0 package whose fdisk and cfdisk tools are the usual command-line partition editors. Only the COPYING file was read.

Price: Free (Free open source) (util-linux pricing, checked 2026-10-24).

Platforms and license: Linux. GPL-2.0 (COPYING) (open source) (license source).

Project activity: 3.2k GitHub stars · last commit Oct 26, 2026

Best for: Minimal systems and recovery shells.

Worth knowing: Package that includes the fdisk and cfdisk partition editors; only the COPYING file was read.

Which one to pick

• You want a preview before changes apply: GParted
• You use the KDE desktop: KDE Partition Manager
• You only need to format a drive: GNOME Disks
• You are working over SSH on a server: GNU Parted