Filelight

Filelight turns disk usage into a ring-shaped map, helping you see which files and folders take up space. It is best suited to Linux and Windows users who want a visual way to locate large items and reclaim storage. Its free, open-source model makes it an approachable choice, though remote scans can be demanding on a network.

Overview

Filelight scans a selected folder or disk and represents its contents as concentric rings. The visual layout makes it easier to spot where storage is concentrated than a plain folder listing, while file and folder details help you identify what a segment represents. You can delete files or folders from the app, so the path from finding space to freeing it is direct.

It can scan local, removable, and remote disks. That breadth is useful for checking more than a computer’s internal drive, but remote scans of NFS or Samba mounts may generate high network traffic. Excluding remote filesystems, removable media, or selected folders gives users a way to limit scan scope.

Key features

• Concentric-ring treemap: The visual view helps locate space-heavy parts of a folder hierarchy; users who prefer a conventional size-sorted list may find this presentation less direct.
• Remote and removable scans: These extend analysis beyond local storage, but scanning network mounts can impose substantial traffic. Exclusions help avoid scanning those locations when that cost is not worthwhile.
• File manager integration: It integrates with Dolphin, Konqueror, and Krusader, which is particularly relevant to users of those Linux file managers.
• Appearance and scan controls: Configurable color schemes and settings let users adjust the display and scanning behavior. A folder can also be passed on the command line to start a scan.

Pricing

Filelight costs nothing. The free plan is the application itself, released as free and open-source software under GPL-2.0+. There is no paid tier or trial to weigh against it, so it suits users who want a no-cost disk analyzer without a subscription or license purchase.

Platforms

Filelight is available for Linux and Windows. Linux users can install it through Discover or another AppStream application store, a distribution package manager, or Flathub. The file manager integrations with Dolphin, Konqueror, and Krusader are most pertinent to Linux users. KDE says its software generally does not transfer information from users’ devices except following an explicit user action; third-party distributors may modify software in ways that affect that policy.

Who it's for

Filelight is a good fit for people who want to inspect disk usage visually, especially Linux users already working with one of its supported file managers. Its remote and removable scanning can help when storage spans more than a local drive, provided network traffic is considered. It is less suitable for users who need a size-sorted application-specific listing or who want to scan remote mounts without adding network load.

Pros and cons

• Pro: The ring-based view makes disk usage visually legible, helping users find space-heavy folders.
• Pro: Local, remote, and removable scanning, plus scan exclusions, give users control over which storage to inspect.
• Pro: File and folder deletion is built into the cleanup workflow.
• Pro: The free, GPL-2.0+ application has no paid plan to unlock its core use.
• Con: Remote scans of NFS or Samba mounts may create high network traffic, a meaningful drawback on constrained or shared connections.
• Con: Application sizes are not shown, so users looking specifically for a view centered on installed applications may need another approach.

Alternatives

For other options, browse Disk Space Analyzers.

• TreeSize is a Windows freemium option with a free plan and trial; its free edition is for private, non-commercial use.
• WizTree is a freemium alternative for Windows and macOS with a free plan; its Individual Supporter Code costs $25 a month, and supporter codes do not expire.
• WinDirStat is a free Windows option for personal or commercial use.
• Disk Usage Analyzer is a free Linux desktop option for disk usage scanning.
• FolderSizes is a Windows freemium alternative; its Personal Edition license costs $30, paid once for personal and home network use, and is unavailable to organizations.
• Disk Analyzer Pro is a macOS and Windows freemium option whose free personal edition includes local-drive usage reports, file and folder deletion, and duplicate-file reports.
• SizeTrend is a Windows freemium alternative with free local scans and an overview that includes cleanup and storage recommendations.
• QDirStat is a free, GPL V2 option for Linux, macOS, and self-hosted use.

Verdict

Choose Filelight if you want a free, open-source visual disk analyzer that can inspect local, removable, and remote storage and help you delete space-consuming items. Its clearest limitation is the potential network load from scanning remote filesystems; users who need to keep that traffic low should exclude those mounts or choose a tool better suited to their scanning needs.