Side by side

Drive Sonar vs Filelight

Both stand on disk space analyzers. Which one you can start free with, which one lets you read the code, and what each costs once you pay.

Drive Sonar

Free plan LinuxMacWindows

Choose Drive Sonar if you want a free desktop tool to map storage and inspect files by type and age. Look elsewhere if you need third-party integrations or require a code-signed Windows installer.

Visit Drive Sonar

Filelight offers a free way to inspect disk usage visually and can include remote and removable storage. Its remote scans may generate substantial network traffic, so that limitation matters when scanning mounted filesystems.

Visit Filelight

The facts

	Drive Sonar	Filelight
Free plan	Yes	Yes
Open source	Not published	Not published
Runs on	Linux, Mac, Windows	Linux, Windows
Lowest paid plan	Free or on request	Free or on request
Plans published	1	1
Maker	Not published	Not published
Website	github.com	apps.kde.org
On disk space analyzers	#8 of 105	#4 of 105

Drive Sonar: what it does well

Treemap and file-extension breakdown show storage use.
Scatter plot compares file size with age.
Reports can be printed or exported.
Runs in user mode without elevated scan privileges.
Installers are available for all three desktop platforms.

What to know first

Windows requires version 10 build 1709 or later.
The Windows installer is not yet code-signed and may show a SmartScreen warning.
The project lists no third-party integrations.

Filelight: what it does well

Visualizes disk usage with concentric rings
Scans local, remote, and removable disks
Shows detailed file and folder information
Can delete selected files and folders
Integrates with three listed file managers

What to know first

Does not show application sizes
Remote filesystem scans can generate high network traffic

Alternatives to Drive Sonar Alternatives to Filelight The whole list