Open source tool for the C:\Windows\Installer folder: move or delete the files nothing needs
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Viktor the CleanerMichal Foist
MichalFoist.ViktorTheCleanerv1.2.0
A careful Windows cleaner that shows what it would delete before it deletes anything.
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mathomgitRasheed
gitRasheed.mathomv0.2.3
Fast, open-source disk space analyzer for Windows
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FolderSizesKey Metric Software
KeyMetricSoftware.FolderSizesv10.3.90
Disk space analysis and reporting tool for Windows
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ReaperScythe Labs
ScytheLabs.Reaperv2026.10.1
Finds unwatched media in your Plex library and safely removes it via Sonarr and Radarr.
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BleachBitBleachBit
BleachBit.BleachBitv6.0.6.633
Clean Your System and Free Disk Space
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MeinPlatzSoftwareOK
SoftwareOK.MeinPlatzv8.66
MeinPlatz offers an easy and fast way to scan the hard disk for lost disk space.
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TreeSizeJAM Software
JAMSoftware.TreeSizev9.9.1
With TreeSize, you can analyze your most important storage systems and directly manage and clean up your files.
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yyzToolsyyzTools
yyzTools.yyzToolsv1.1.1.2110
A local-first Windows productivity toolkit with search, clipboard, OCR, translation, file, media, and automation tools.
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WinDirStatThe WinDirStat Team
WinDirStat.WinDirStatv2.9.3
WinDirStat is a disk usage statistics viewer and cleanup tool for various versions of Microsoft Windows.
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VacuonJoedson Alves
Joedsonalves.Vacuonv0.7.1
Disk space analyzer that reads the NTFS MFT directly and shows what it is about to delete.
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Temp CleanerRobertasTa
RobertasTa.TempCleanerv1.4
Transparent temp-file cleaner that shows its reasoning, previews every deletion, and keeps a full audit log.
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BCUninstallerMarcin Szeniak
Klocman.BulkCrapUninstallerv6.3.0.0
Bulk program uninstaller with advanced automation. It excels at removing large amounts of applications with minimal to no user input, while requiring next to no technical knowledge.
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HHD Software DupeCareHHD Software Ltd.
HHDSoftware.DupeCarev1.19.00.0248
Automatically deduplicate data and compress files in your folders.
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K8LilBuba
LilBuba.K8v1.8.1
Safe, private, one-time Windows dedupe and cleanup - find duplicate files, photos, media and developer junk, with quarantine-and-restore.
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AtlayaView (Framework-Dependent)Chris Deliga
Morfyuum.AtlayaView.FxDependentv2.0.36
Fast local disk space visualization for Windows with cushion treemaps.
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D
disktrackerpratham15541
pratham15541.disktrackerv2.1.1
Fast cross-platform CLI for recursive disk usage analysis, storage tracking, and filesystem insights.
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D
dufChristian Muehlhaeuser
muesli.dufv0.9.1
Disk Usage/Free Utility - a better 'df' alternative
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AtlayaViewChris Deliga
Morfyuum.AtlayaViewv2.0.36
Fast local disk space visualization for Windows with cushion treemaps.
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Clean MindSiva Teja Mutyala
MS-Teja.CleanMindv1.2.3
Disk usage analyzer that understands developer bloat
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DriveLenskulkamKakarot
kulkamKakarot.DriveLensv1.0.0
Visual disk-space analyzer for Windows with an interactive treemap and safe Recycle Bin cleanup.
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S
SweeftJeffersoft
jeffaristi92.Sweeftv1.1.0
Sweep the cruft — reclaim disk space from build/dependency folders and old files.
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TreeSize FreeJAM Software
JAMSoftware.TreeSize.Freev4.8.1.610
Every hard disk is too small if you just wait long enough. TreeSize Free tells you where precious disk space has gone.
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PatchCleaner PortableHomeDev
HomeDev.PatchCleanerPortablev1.4.2.0
(Re)Moves orphaned .msi files from the C:\Windows\Installer folder to free up disk space.
