WinDirStat

Name

WinDirStat

Website

https://windirstat.info

Company type

Private

Operating status

Operating

Ownership category

akta.pro rank

Headquarters

HQ city

Forst

HQ country

Germany

HQ region

Europe

Markets served

GTM type

B2C

Offering type

Software

Cost components

Infrastructure, Technology or R&D, Operations

Revenue model

1. Open Source Free Distribution: WinDirStat is distributed as free, open source software under the GNU General Public License version 2 (GPLv2). There is no commercial revenue model; the project is community-supported and volunteer-maintained. No subscription, usage-based, or transaction revenue streams exist.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels1 record

Core offering

WinDirStat is a disk usage analyzer and cleanup assistant for Microsoft Windows. It scans user-selected drives or folders and presents the results in multiple views: an All Files / Largest Files tree view sorted by file/subtree size, a treemap that renders each file as a colored rectangle with area proportional to size and cushion shading for directory hierarchy, a Duplicate Files view, a Search Results view, a File Watcher, and an extension list with file-type statistics. It is distributed free of charge as open source software under the GNU General Public License version 2 (GPLv2).

Product overview

WinDirStat is a single open-source desktop application for Microsoft Windows that serves as a disk usage analyzer and cleanup assistant. The core product, WinDirStat, provides comprehensive disk analysis through multiple visualization modes including tree views, treemaps with cushion shading to show directory hierarchy, and extension-based file type statistics. It offers features for finding duplicate files, monitoring file changes, and identifying largest files.

Differentiator

Problem solved

Functional benefit

Products and services

• WinDirStat Disk usage analyzer and cleanup assistant for Microsoft Windows that scans user-selected drives or folders and presents the results in multiple views: All Files and Largest Files tree views sorted by file/subtree size, a treemap visualization in which each file is rendered as a colored rectangle with area proportional to file size and cushion shading for directory hierarchy, Duplicate Files view, Search Results view, File Watcher for monitoring file/directory changes, and an Extension List serving as both a color legend for the treemap and aggregate file-type statistics. Distributed free of charge as open source software under GPLv2.

Segments1 record

Ideal customer profiles1 record

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Recent moves2 records

Direct peers

• JDiskReport: JDiskReport is a free Java-based disk usage reporting tool that visualizes how disk space is used. It is a cross-platform analog to WinDirStat with overlapping visualization and reporting capabilities, often mentioned in similar utility tool roundups.
• FolderSizes: FolderSizes is a commercial Windows disk space analysis tool that provides reports, charts, and treemap-style views of file/folder sizes. It competes with WinDirStat for the same IT-professional and power-user segment, with the key difference being that FolderSizes is a paid enterprise-grade product.
• SpaceSniffer: SpaceSniffer is a free Windows application that uses a treemap-style visualization to show what's consuming disk space. It is a direct functional and visual analog to WinDirStat and is commonly listed alongside it as a top recommendation for disk cleanup.
• DaisyDisk: DaisyDisk is a commercial macOS disk space analyzer that provides an interactive sunburst/treemap visualization for cleaning up storage. It is functionally equivalent to WinDirStat but for macOS, and represents the paid, polished counterpart in the same category.
• TreeSize Free: TreeSize Free is a Windows disk space manager from JAM Software that scans drives and folders and shows size distributions, closely overlapping with WinDirStat's tree view and treemap. It shares the same target user (Windows power users and IT) and frequently appears in head-to-head comparisons with WinDirStat.
• WizTree: WizTree is a free Windows disk space analyzer that, like WinDirStat, visualizes file/folder sizes to identify large files. It directly competes by offering faster scanning (via direct MFT reads) and is a frequent alternative recommendation in the same tech-community discussions where WinDirStat is mentioned.
• GrandPerspective: GrandPerspective is a free open source disk usage visualizer for macOS that uses a treemap to show file size distribution. It is the macOS counterpart to WinDirStat in functionality and origin (open source, treemap-based, free), making it a strong cross-platform peer.
• Disk Savvy: Disk Savvy is a disk space analysis and management utility for Windows that scans storage devices and presents file distribution reports. It targets the same use case (identifying large and duplicate files) as WinDirStat and is often positioned as a more scalable enterprise alternative.
• RidNacs: RidNacs is a free, lightweight Windows disk usage analyzer that shows folder sizes in a treemap-style view. It is a smaller-scale but directly comparable free utility in the same category as WinDirStat.

Broad incumbents

• Microsoft Storage Sense: Storage Sense is the built-in Windows feature that automatically frees up disk space by removing temporary files and items in the recycle bin. While not a direct visualization tool, it is the OS-level incumbent that increasingly absorbs the user problem WinDirStat solves, representing a structural threat to the category.

Market position

Strengths3 records

Weaknesses4 records

Competitive moat3 records

Key risks6 records

Key highlights6 records

Customer concentration

• Xx.com/windirstat

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about WinDirStat