MACMCleaner
Free your disk. Keep your privacy.
A safe, open-source, privacy-first Windows system cleaner — built from scratch with Tauri v2 and Rust.
Windows SmartScreen may show a warning. Normal for apps without a code-signing cert. Code is 100% public on GitHub.
~8 MB
Installer
0
Network calls
30+
Blocked paths
2
Languages
What does it clean?
Temporary Files
%TEMP%, %TMP%, C:\Windows\Temp — files and folders generated during normal system use.
Browser Cache
Chrome, Edge, Firefox and Brave — network cache only. Never cookies, history or passwords.
System Junk
Prefetch, Windows event logs and Explorer thumbnail databases.
Recycle Bin
Full empty with total size preview before you confirm anything.
Safety system
The most critical component. Every path is validated at two independent checkpoints — during scan and immediately before deletion — through a three-layer chain.
- Non-destructive scan — the analysis phase is read-only, nothing is modified
- 3-layer safety chain: user exclusions → explicit allowlist → critical path blocklist
- 30+ system directories permanently blocked (System32, Program Files, Documents...)
- Individual filename blocklist (ntoskrnl.exe, pagefile.sys, registry hives...)
- Mandatory confirmation before any deletion — exact count and total size always shown
- Files locked by running processes are skipped gracefully without fatal errors
Total privacy
MACMCleaner makes zero network connections throughout its entire lifecycle. Not one. Enforced at the architectural level — there is no HTTP client in the code.
- Zero network connections — no telemetry, no crash reporting, no update pings
- No ads, no bundleware, no surprises
- Only config stored: your language and excluded paths — on your machine, never on servers
- GDPR (EU 2016/679) and LOPD-GDD (Spain, Organic Law 3/2018) compliant
- 100% public and auditable source code on GitHub
Tech Stack
Tauri v2 + Rust
Native backend. Memory safety guaranteed. ~8 MB vs ~120 MB Electron.
React + TypeScript
Modern frontend with strict mode. Framer Motion for 60fps animations.
GPL v3
Copyleft license. Open source forever. Auditable by anyone.
How to install
Download the installer by clicking the button below
Run the file and accept the UAC prompt — required to clean system directories
Choose your language and accept the terms on first launch
Hit Scan, review the results and confirm the clean
System requirements
- Windows 10 (64-bit) 1903+ or Windows 11
- Microsoft WebView2 Runtime (pre-installed on Win 11)
- ~50 MB disk space
FAQ
Is it safe for my personal files?
Yes. MACMCleaner has 30+ permanently blocked directories that are never touched: Documents, Desktop, Downloads, Pictures, Videos, Music and all critical system directories. Nothing is deleted without your explicit confirmation.
Why does it request administrator permissions?
To clean C:\Windows\Prefetch and C:\Windows\Logs, Windows requires elevated privileges. This is completely normal and necessary for real system cleanup.
Windows warns me it's an unknown application — is that normal?
Yes. Windows SmartScreen shows this warning for any .exe without a paid code-signing certificate. The source code is 100% public on GitHub — you can audit it and build it yourself if you prefer.
Does it clean browser cookies or passwords?
No. The browser cache cleaner has an explicit blocklist that protects Bookmarks, Cookies, History, Login Data, Web Data and 6 more protected filenames, regardless of path.
Does it connect to the internet for updates?
No. MACMCleaner makes zero network connections throughout its lifecycle. No telemetry, no update pings, no analytics. What happens on your machine stays on your machine.
100% public code
MACMCleaner is free software under GPL v3. Read the code, build it yourself or contribute to the project.