Open Source Windows Disk Space Analyzers
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Disk Space Analyzers for Windows
View 74 business solutionsBrowse free open source Disk Space Analyzers and projects for Windows below. Use the toggles on the left to filter open source Disk Space Analyzers by OS, license, language, programming language, and project status.
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CrystalDiskInfo
A HDD/SSD utility software
A HDD/SSD utility software which supports a part of USB, RAID and NVMe. -
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CrystalDiskMark
A simple disk benchmark software
A simple disk benchmark software. -
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HWiNFO
Comprehensive Hardware Analysis, Monitoring and Reporting for Windows
Professional System Information and Diagnostics. Comprehensive Hardware Analysis, Monitoring and Reporting for Windows and DOS. HWiNFO is an all-in-one solution for hardware analysis and monitoring supporting a broad range of OSes (DOS, Microsoft Windows 95 - Windows 11, WinPE) and platforms (i8086 - Xeon Platinum). Exhausting information about hardware components displayed in hierarchy unfolding into deep details. Useful for obtaining a detailed hardware inventory report or checking of various hardware-related parameters. Real-time monitoring of a variety of system and hardware parameters covering CPUs, GPUs, mainboards, drives, peripherals, etc. Useful for detection of overheating, overload, performance loss or failure prediction. Full hardware hierarchy, or quick summary overview. Export into XML, CSV, HTML reports. System monitoring in customizable tables, graphs, tray icons, OSD. -
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SpaceSniffer
Find lost disk space the easy way
SpaceSniffer is a freeware (donations are welcome) and portable tool application that lets you understand how folders and files are structured on your disks. By using a Treemap visualization layout, you have immediate perception of where big folders and files are placed on your devices. Treemap concept was invented by Prof. Ben Shneiderman, who kindly permitted the use of his concept into this tool. -
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WinDirStat: Windows Directory Statistics
A disk usage statistics viewer and cleanup tool for Windows
WinDirStat (Windows Directory Statistics) is a disk usage statistics viewer and cleanup tool for Windows. On start up, WinDirStat reads the whole directory tree once and then presents it in three useful views. The official download location and collaboration platform for WinDirStat has moved to GitHub: https://github.com/windirstat/windirstat Downloads and source code provided on SourceForge may not always be up to date. They are primarily used for disaster recovery purposes. -
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WizTree
WizTree quickly analyzes disk space, showing large files and folders.
WizTree is an ultra-fast and intuitive disk space analyzer that helps you instantly see what’s taking up space on your hard drives. Using advanced technology, it reads the Master File Table (MFT) directly on NTFS drives, making it dramatically faster than traditional scanners. The program displays your files and folders in a clear, visual tree-map view, showing their relative sizes so you can quickly locate and delete large or unnecessary items. -
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QDirStat
Qt-based directory statistics
Qt-based directory statistics: KDirStat without any KDE -- from the author of the original KDirStat. QDirStat is a graphical application to shows where your disk space has gone and to help you to clean it up. This is a Qt-only port of the old Qt3/KDE3-based KDirStat, now based on the latest Qt 5. It does not need any KDE libs or infrastructure. It runs on every X11-based desktop on Linux, BSD and other Unix-like systems and of course in a Docker container. -
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Windows Cleaner Utility
A windows batch script that cleans your PC from temporary files
A Windows batch script that cleans your PC from temporary files. If you've been a Windows user for a long time without cleaning it up, or you don't know how to clean it, you will be amazed of how much space this tool can free for you! Just download "WindowsCleanerUtility.bat" or "WindowsCleanerUtility-x86_64.exe" from Releases and right click on it and select run as administrator. Choose any option from the meun provided. -
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Drive Health Analyzer - SSD/HDD Monitor
Monitor disk health, predict failures, track SSD/HDD SMART attributes
Drive Health Analyzer is a comprehensive disk monitoring solution designed to prevent data loss by tracking the health status of SSDs and HDDs. The software reads SMART attributes, monitors temperature, analyzes disk performance, and predicts potential drive failures before they occur. It supports all major storage types including NVMe, SATA, and IDE drives. Features real-time alerts, detailed health reports, and automatic background monitoring. The intuitive dashboard displays critical parameters like read/write errors, bad sectors, and remaining lifespan estimates helping users make informed decisions. -
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ncdu
Ncdu is a disk usage analyzer with an ncurses interface
Ncdu is a disk usage analyzer with an ncurses interface. It is designed to find space hogs on a remote server where you don’t have an entire graphical setup available, but it is a useful tool even on regular desktop systems. Ncdu aims to be fast, simple and easy to use, and should be able to run in any minimal POSIX-like environment with ncurses installed. -
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spaceman
Treemap disk usage analyzer: In search of lost space
Treemap disk usage analyzer: In search of lost space (a.k.a. wata-analyzer) -
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BazWare FLF (Find Large Folders)
Find that huge folder that you didn't know it was there
Are you tired of being unable to find what is using up precious hard disk space? Find that huge folder that you didn't know it was there. Select drive and press start to go through directories manually. Click the refresh button to calculate folder size, double-click to the folder name, or press "+" button to see sub folders. Deleting a folder is possible by clicking the bin button next to the folder. Increase the maximum number of folders when required. (Using more than 10 is recommended for large folders such as Program Files). -
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DiskGeek
Free disk space analyser for Windows — no ads, no bloat
DiskGeek scans your drives and shows exactly what's eating your space, with a sortable list view and a treemap view. It finds exact duplicates (SHA-256) and near-duplicate / visually similar images using perceptual hashing, with full-text search across scan results and batch rename. Snapshot comparison shows what changed between scans over time, and scheduled, unattended scans can run from the command line for ongoing monitoring. Includes NTFS permission auditing plus CSV/HTML export. No installer bloat, no bundled offers, no telemetry, no Pro tier or upsells — 100% free. Requires Windows 10 or 11 (64-bit). Self-contained installer bundles .NET 8, ~32 MB download. -
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Osenpa Disk Analyzer
Free Windows disk space analyzer to find large files
Osenpa Disk Analyzer is a free Windows disk space analyzer that helps you understand what is taking up storage on your PC. Scan all drives or inspect a single drive, then review the largest folders and files in a clean visual tree with size bars, file type labels, search, and minimum-size filtering. The app includes browser-based lookup for unfamiliar files or folders, Free Space Now cleanup for temporary files, cache locations, and the Recycle Bin, plus safeguards for protected system locations. It runs locally, does not read file contents, and supports light and dark themes with multilingual interface/search support. -
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MyDisk
Storage and disk utility and logger
Windows storage device utility logger and info viewer. This app allows you to view, and log data about your mounted storage devices! -
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c² flux is an ultra-fast Windows disk space analyzer. Its high-speed scanning engine reads NTFS metadata directly from the Master File Table (MFT) and uses native Windows NT directory APIs as a fallback, avoiding slower file-by-file access whenever possible. Results are shown in sortable tree, table, pie and bar chart views and can be saved, loaded, exported or copied to the clipboard.
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Simple Visual Block
Visualize files on disk with file size
A simple version Disk Space Analyzer, functionality like WinDirStat (Windows Directory Statistics), SpaceSniffer, visualize file size as blocks. This program write with Win32 API, targeting light, fast, simple, include net mapped drive, reading disk usage statistics and show in block viewer. -
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Disk Drives Informations
Display information for disk drives. Require Ascoos Framework 24
This package displays a list of the disk drivers you have on your system. Creates a box-style formatted table that displays both the disk and the total, used, and free space on it. You can easily integrate it into any code as long as you follow the instructions below in the details and have Ascoos Framework 24 installed. -
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Temp file killer
Temp file cleaner for windows
this software cleans your pc and make it faster -
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Big File Finder (BFF)
Program to find (all) files above a size at a target dir
Big File Finder, a simple program to find (all) files above a size at a target dir. -
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Disk space checker
An application that controls disk drive space
The application checks each drive for free space and compares them with the threshold values designated by the user. If they are below threshold, it sends out mail to the designated addresses. Application includes two projects; a configuration form and a windows service. Service triggers every hour and sends mail if the conditions are met. -
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Little Disk Cleaner
Free up valuable disk space
Little Disk Cleaner is a open source program written in C# that removes any unneeded files to free up extra hard drive space and make windows run faster. -
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Refundant
Redundant files remover
GUI is little broken - the list of duplicates is not relayeble, but this bug not affected main functionality. -
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Sadeaner
Sadeaner is a good tool for cleaning up the PC
Sadeaner is a powerful and efficient tool for cleaning your PC. It offers a wide range of useful functions, such as the ability to remove unnecessary files and folders, free up valuable disk space, and improve the overall performance of your system. This makes it an excellent choice for gamers, as it can help to free up resources and improve the performance of games. Additionally, Sadeaner will also include advanced features such as a registry cleaner, startup manager, and browser cleaner, which can help to keep your system running smoothly and efficiently. -
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