OpenClean

DaonWare·DaonWare.OpenClean

Honest, open-source system cleaning for Windows — no telemetry, no dark patterns.

OpenClean shows an honest picture of your Windows PC and cleans only what you choose - temp files, caches, startup entries, duplicates and more. No fake speed boosts, no invented problems, no account, no background service, and no telemetry. Every number you see is a real measurement. Free and open source; a portable single-file build runs from a USB stick with no installation and no .NET required

winget install --id DaonWare.OpenClean --exact --source winget

Latest 1.3.0·July 22, 2026

Release Notes

Added

  • Deep system cleanup as its own tab, covering five areas Windows keeps to itself: the previous installation (Windows.old), the component store (WinSxS), shadow copies, the Windows Update cache and the Delivery Optimization cache. Every area is measured before anything is touched and confirms separately before it deletes.
  • Occupied space and reclaimable space are shown as two different numbers, because they rarely match, and freed space is measured before and after instead of estimated.
  • Network transparency (local) as its own tab: a live view of which programs hold connections to the outside, with process name and path, remote address and port, and connection state. The view only reads - it never blocks, throttles or alters a connection, and reverse DNS lookup is off by default.
  • Drive health in "Storage & RAM": every physical disk gets a verdict - healthy, keep an eye on it, or failure likely - read locally from SMART through Windows, with no vendor tool and no online lookup. The verdict stays free; the individual readings (temperature, life remaining, power-on hours, power cycles, reallocated and pending sectors, total bytes written) are part of OpenClean Pro.
  • Real NVMe SMART values for NVMe SSDs - power-on hours, power cycles and total bytes written - decoded from the NVMe health log page, plus power cycles for USB drives. Whatever no source reports stays empty instead of being shown as zero.
  • A central settings area behind the gear icon in the title bar, bundling theme, language and licence management in one place.
  • A theme picker with Cyberpunk, Gaming-RGB, Nord, Catppuccin, Dracula, Dev and Windows 11 styles, switchable live without a restart, plus an optional Windows accent colour, a real Mica/Acrylic backdrop on Windows 11 and a "reduce animations" switch.
  • The cookie inventory on the privacy page lists cookie names per domain with a live search, and now reads cookie databases while the browser is open - without creating a volume shadow copy, which would discard your older restore points.

Changed

  • Cleanup and Deep Clean are grouped under a single expandable "Cleanup" entry in the sidebar.
  • The entry in "Add or remove programs" is now named "OpenClean" without the version number.
  • Internal restructuring toward MVVM and clean-code principles, with no change to behaviour or performance: dialog and UI-thread access now go through interfaces, and the largest classes were split into focused parts.

Performance

  • The main lists - installed programs, network connections, startup entries, updates and context-menu entries - are UI-virtualised, and the installed-programs list no longer re-sorts once per item while it fills.
  • The Restore area reads backup sessions and restore points in the background, the RAM waveform caches its drawing resources instead of rebuilding them every frame, and duplicate image previews are decoded once and cached.

Removed

  • The separate "Pro" entry at the bottom of the sidebar; licence status and activation now live in the central settings area.

Fixed

  • The cookie scan silently returned nothing when the database was locked.
  • The "Cookies" category stayed empty during a privacy scan while the inventory above it was full.
  • The privacy page could not be scrolled, leaving "Browser history" and everything below it out of reach.
  • The cookie search box was rendered unstyled.

Installer type: inno

x644707DEFA7C8AAE8D532BE7628A92721E58E7885CE73ECECD73CEAEBC9F0BD136

Details

Homepage
https://github.com/daonware-it/OpenClean
License
MIT
Publisher
DaonWare
Support
https://github.com/daonware-it/OpenClean/issues
Privacy Policy
https://github.com/daonware-it/OpenClean/blob/main/PRIVACY.md
Copyright
2026 DaonWare
Moniker
openclean

Tags

cleanercleanupprivacytemp-filesduplicate-finderstartup-manageruninstallerdisk-spaceopen-sourcewindows

Older versions (2)

1.2.0
x64CF135E36E219823EDEEA6FF21845E6F73E9C8391AD29340F712CAF97A86EF6C5
1.0.0
x6476B2D9DE0A57359217FEF72E3D33173D76026E1E54E564A36002413DBF48DD08