A fast, transparent, and bloatware-free Windows system maintenance & cleaner application.
Built with 100% native Windows tools and C#. Zero third-party dependencies.
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Most popular PC cleaner tools today have become bloated: bundled with background telemetry daemons, adware, and aggressive registry cleaners that can break Windows components.
Lightweight Windows System Maintenance Tool is a minimalist, safe, and portable utility designed to perform essential system cleaning, network repair, and health verification using only native Windows APIs and built-in system tools.
- No installation required: A single standalone
.exe(~200 KB). - Zero background services: Runs only when you open it.
- Zero telemetry: Completely offline; does not make external network requests.
- Safe by design: Preserves Windows security descriptors and Access Control Lists (ACLs) by cleaning folder contents rather than deleting and recreating root directories.
| Module | Description | Native Mechanism |
|---|---|---|
| 🧹 Temporary Files | Cleans user temp (%TEMP%), Windows system temp, and local crash dumps without altering directory ACLs. |
System.IO with safe file attribute normalizer & locked-file bypass |
| 🗑️ Recycle Bin | Empties the Recycle Bin across all drives silently and without confirmation prompts. | Windows Native Shell32.dll (SHEmptyRecycleBin) |
| 🖼️ Explorer Cache | Clears cached thumbnail databases (thumbcache_*.db) to reclaim storage and resolve corrupted icon previews. |
File enumeration on %LOCALAPPDATA%\Microsoft\Windows\Explorer |
| 📦 Windows Update Cache | Safely purges accumulated downloaded update installers in SoftwareDistribution\Download (often reclaiming 5–20 GB). |
Prompt-free service management (net stop wuauserv /y) and fast kernel batch deletion |
| ⚡ Prefetch | Removes outdated Windows Prefetch execution files (C:\Windows\Prefetch). |
Safe file purging |
| 📝 Logs & Error Reports | Cleans Windows Error Reporting archives (WER), CBS installation logs, and setup diagnostics. |
Directory scan & cleanup |
| 🌐 Network & DNS Reset | Flushes DNS resolver cache, reregisters DNS names, resets Winsock catalog, and resets the TCP/IP stack to fix connection lags. | ipconfig /flushdns, ipconfig /registerdns, netsh winsock reset, netsh int ip reset |
| 🛠️ Component Verification | Scans and repairs corrupt Windows system files and component store health. (Optional deep scan) | DISM /Online /Cleanup-Image /RestoreHealth and sfc /scannow |
- Real-Time Storage Counter: Calculates and displays the exact freed space (in MB/GB) and the total number of files purged as cleanup progresses.
- Multi-Threaded Architecture: All maintenance tasks run on asynchronous background worker threads; the dark-themed user interface never freezes or stutters.
- Color-Coded Terminal Console: Detailed live logs with colored status tags (
[+] Success,[*] In Progress,[!] Warning,[>] Info). - One-Click Log Copy: Easily copy the full session diagnostic log to your clipboard.
| Feature | Lightweight Maintenance Tool | Typical Third-Party Cleaners (e.g., CCleaner) |
|---|---|---|
| Executable Size | ~200 KB | 70 MB – 150 MB |
| Background Processes | 0 (None) | Constant background monitoring services |
| Telemetry / Data Tracking | 0% (Completely offline) | Telemetry & ad tracking enabled by default |
| Installer / Bloatware | None (Single portable .exe) | Bundled toolbars & companion browser prompts |
| Registry Cleaning Risks | None (No dangerous registry hacks) | High risk of registry corruption |
| Source Code | 100% Open Source | Proprietary / Closed source |
- Download the latest
SystemMaintenance.exefrom the Releases page. - Double-click to run. An automatic UAC prompt will request Administrator privileges.
- Choose your desired cleaning options or click "⚡ Quick Cleanup (30s)".
No SDK or IDE installation is needed! Every Windows 10 and 11 machine includes the Microsoft C# compiler (csc.exe) by default.
- Clone or download this repository:
git clone https://github.com/your-username/Windows-Maintenance-Tool.git cd Windows-Maintenance-Tool - Double-click
build.bat(or run it from the command line):build.bat
- A freshly compiled
SystemMaintenance.exewill be ready in 2 seconds!
- Locked Files: Files currently in use by active Windows applications are safely ignored without halting the cleanup process.
- Root Directory Protection: The tool never deletes root system folders (like
C:\Windows\Tempor%TEMP%). Only child contents are removed, preserving native Windows file security permissions and ownership. - Process Guard: All command executions include hard timeouts (
Process.Kill()) to prevent background hangs or stalled services.
This project is licensed under the MIT License — free for personal and commercial use.