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InstallerClean
What it is
InstallerClean scans .msi and .msp files located directly in C:\Windows\Installer to find files that may no longer be needed and reclaim disk space. It checks Windows Installer records and registry information, and holds back files when those checks cannot establish that removal is safe. Users can move identified files to a chosen backup folder or delete them permanently.
The free, open-source application is available in portable, setup, and command-line builds; the setup includes both the graphical interface and CLI. The command-line version supports scan, move, and delete operations for scripting, with exit codes and Windows Event Log events. InstallerClean requires administrator privileges and 64-bit Windows 10 version 1607 or later, or Windows 11. It does not scan subfolders or clean WinSxS, and it has no background service, scheduled task, or automatic cleanup. Downloads are unsigned, though release pages provide SHA-256 hashes and VirusTotal results.
For and against
For
- Checks installer records and registry information before removal.
- Can move selected files to a backup folder.
- Portable, setup, and command-line builds are available.
- Free and open source under Apache 2.0.
- Supports keyboard and screen-reader use.
Against
- Scans only .msi and .msp files directly in the folder.
- Does not clean the WinSxS folder.
- Requires administrator privileges and 64-bit Windows 10 or later.
- Downloads are unsigned and may show an unknown-publisher warning.
The verdict
InstallerClean provides a cautious way to review installer files, with backup-folder moves and command-line operations available. It requires manual use and does not cover subfolders or WinSxS.
Who it suits
InstallerClean suits Windows users whose C:\Windows\Installer folder has accumulated files, including users of software installed through MSI packages. Its command-line build also suits people who want to script scans or cleanup actions.
Plans and prices
InstallerClean
Windows 10 version 1607 or later · 64-bit Windows · Administrator privileges
Read 11 Oct 2026 · github.com
On the record
- Accessibility
- The maker says the app supports keyboard and screen-reader use and that its dark-theme text meets WCAG AA contrast.github.com · read 11 Oct 2026
- Automation
- The command-line build supports scan, move and delete operations for scripting and scheduled tasks.github.com · read 11 Oct 2026
- Builds
- Downloads include portable, setup, and command-line builds; setup bundles both the GUI and CLI.github.com · read 11 Oct 2026
- Builds and integrations
- Downloads include portable, setup and command-line builds, with installation also available through winget and Scoop.github.com · read 11 Oct 2026
- Cleanup options
- Users can move identified files to a chosen backup folder or delete them permanently.github.com · read 11 Oct 2026
- File types
- It scans .msi and .msp files located directly in C:\Windows\Installer, without scanning subfolders.github.com · read 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 · read 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 · read 11 Oct 2026
- License
- The project is open source under the Apache 2.0 license.github.com · read 11 Oct 2026
- Network activity
- The app checks GitHub for updates when run, and that check can be turned off in About.github.com · read 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 · read 11 Oct 2026
- Privacy
- The app checks GitHub for a newer version when launched, and its first-run anonymous report can be disabled on the results screen.github.com · read 11 Oct 2026
- Purpose
- InstallerClean scans C:\Windows\Installer for unneeded Windows Installer files so users can reclaim disk space.github.com · read 11 Oct 2026
- Removal options
- Users can move offered files to a chosen backup folder or delete them permanently.github.com · read 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 · read 11 Oct 2026
- Requirements
- It requires 64-bit Windows 10 version 1607 or later, or Windows 11, and administrator privileges.github.com · read 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 · read 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 · read 11 Oct 2026
