InstallerClean

Free plan Windows

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What InstallerClean is

InstallerClean scans .msi and .msp files directly in C:\Windows\Installer to find files that may be unnecessary and reclaim disk space. It checks Windows Installer records and registry information, and holds back files when these checks cannot establish that removal is safe. You can move identified files to a backup folder or delete them permanently. The Windows app comes in portable, setup, and command-line builds; setup includes the graphical interface and CLI. The CLI can scan, move, or delete files and report exit codes and Windows Event Log events. InstallerClean requires 64-bit Windows 10 version 1607 or later, or Windows 11, and administrator privileges. It is free and open source under Apache 2.0. The maker says it supports keyboard and screen-reader use, and that its dark-theme text meets WCAG AA contrast. Downloads are unsigned, so Windows may show an unknown-publisher warning. The program does not scan subfolders or clean WinSxS, and it has no background or automatic cleanup.

Who it suits

It suits Windows users with accumulated installer files, including machines with frequent installs and removals or heavy MSI-based software. Its command-line build also suits users who want to script scans or cleanup.

What it does well

Checks installer records and registry data before offering files.
Lets users move files to backup or delete them.
Includes portable, graphical, and command-line builds.
Free and open source under Apache 2.0.

What to know first

Requires 64-bit Windows and administrator privileges.
Does not scan subfolders or clean WinSxS.
No background service, scheduled task, or automatic cleanup.
Unsigned downloads may trigger an unknown-publisher warning.

Limits

The tool scans only .msi and .msp files directly in C:\Windows\Installer; it does not scan subfolders or WinSxS. It has no background service, scheduled task, or automatic cleanup.

Plans

Plan	Billed and limits	Price
InstallerClean	Windows 10 version 1607 or later · 64-bit Windows · Administrator privileges	Free

As github.com lists them, read 11 Oct 2026. The maker's own page has the final word.

Getting started

Open the InstallerClean project website on GitHub.
Choose the portable, setup, or command-line build, or install through winget or Scoop.
Run InstallerClean with administrator privileges on supported 64-bit Windows.
Scan the Installer folder and review the files it identifies.
Move selected files to a backup folder or delete them permanently.

Verdict

InstallerClean offers a cautious way to identify and remove files directly in the Windows Installer folder. Check its Windows requirements and unsigned-download warning first, and note that cleanup is manual rather than automatic.

Questions

Is InstallerClean free?

Yes. Its listed plan costs nothing, and there is no free trial.

Which Windows versions does it support?

It requires 64-bit Windows 10 version 1607 or later, or Windows 11, and administrator privileges.

Is InstallerClean open source?

Yes. The project uses the Apache 2.0 license.

What download options are available?

There are portable, setup, and command-line builds. The setup build includes the GUI and CLI; installation is also available through winget and Scoop.

Does it delete files automatically?

No. It has no automatic cleanup, background service, or scheduled task. Users can move identified files to a backup folder or delete them permanently.

Are the downloads signed?

No. Windows may show an unknown-publisher warning; release pages provide SHA-256 hashes and VirusTotal scan results.

Facts from InstallerClean's own pages

Accessibility: The maker says the app supports keyboard and screen-reader use and that its dark-theme text meets WCAG AA contrast. · github.com, 11 Oct 2026
Automation: The command-line build supports scan, move and delete operations for scripting and scheduled tasks. · github.com, 11 Oct 2026
Builds: Downloads include portable, setup, and command-line builds; setup bundles both the GUI and CLI. · github.com, 11 Oct 2026
Builds and integrations: Downloads include portable, setup and command-line builds, with installation also available through winget and Scoop. · github.com, 11 Oct 2026
Cleanup options: Users can move identified files to a chosen backup folder or delete them permanently. · github.com, 11 Oct 2026
File types: It scans .msi and .msp files located directly in C:\Windows\Installer, without scanning subfolders. · github.com, 11 Oct 2026
Intended users: The maker describes it for Windows users whose C:\Windows\Installer folder has accumulated unneeded files, including machines with heavy MSI-based software or frequent software installs and removals. · github.com, 11 Oct 2026
Known limits: InstallerClean does not clean the WinSxS folder and does not run as a background service, scheduled task or automatic cleaner. · github.com, 11 Oct 2026
License: The project is open source under the Apache 2.0 license. · github.com, 11 Oct 2026
Network activity: The app checks GitHub for updates when run, and that check can be turned off in About. · github.com, 11 Oct 2026
Notable limit: InstallerClean does not clean the Windows WinSxS folder and has no background service, scheduled task, or automatic cleanup. · github.com, 11 Oct 2026
Privacy: A first-run anonymous report is sent unless unticked; it excludes file names, folder names, account names, and machine identifiers. · github.com, 11 Oct 2026
Purpose: InstallerClean scans C:\Windows\Installer for unneeded Windows Installer files so users can reclaim disk space. · github.com, 11 Oct 2026
Removal options: Users can move offered files to a chosen backup folder or delete them permanently. · github.com, 11 Oct 2026
Report contents: The optional report contains scan and cleanup results, app and language versions, and Windows version, but no file names, folder names or account name. · github.com, 11 Oct 2026
Requirements: It requires 64-bit Windows 10 version 1607 or later, or Windows 11, and administrator privileges. · github.com, 11 Oct 2026
Safe file checks: It checks Windows Installer and registry records and holds back files when those records cannot establish that they are safe to remove. · github.com, 11 Oct 2026
Safe identification: It checks Windows Installer records and the registry, and holds back files when it cannot determine whether they are needed. · github.com, 11 Oct 2026
Scripting: The CLI supports scan-only, move, and permanent-delete operations, and reports exit codes and Windows Event Log events. · github.com, 11 Oct 2026
Security: The downloads are unsigned, and release pages provide SHA-256 hashes and VirusTotal scan results. · github.com, 11 Oct 2026
Security checks: The maker says each download has a SHA-256 hash on its release page and builds are scanned by VirusTotal before release. · github.com, 11 Oct 2026
Security support: Only the latest release receives fixes, and vulnerability reports should be submitted through a private GitHub security advisory. · github.com, 11 Oct 2026
Signing status: The downloads are unsigned and Windows may show an unknown-publisher warning; the project says it has been accepted for free code signing, but the certificate has not yet been issued. · github.com, 11 Oct 2026
Support: Users can report bugs or suggestions through GitHub issues or discussions; donations are optional. · github.com, 11 Oct 2026