Duplicate File Detection
Finds identical files across your drives using content comparison - not just file names. Groups duplicates for easy review.
💻 OS Cleaner · v2.0.0 · Free
Safe Disk Cleanup
for Windows
Find duplicate files, discover large files, review risk scores, and reclaim disk space - all without losing anything you didn't choose to delete.
OS Cleaner never deletes anything automatically. Every cleanup action requires your explicit confirmation. You stay in control at all times.
Windows 10 / 11 · ~15 MB · No installation of dependencies
OS Cleaner v2.0.0
Screenshot coming soon
Capabilities
What OS Cleaner Does
Large File Discovery
Surfaces the biggest space consumers on your system so you can decide what's worth keeping and what's not.
Risk Score Badges
Each file gets a colour-coded risk indicator - so you know at a glance what's safe to delete and what to leave alone.
Safe Deletion Flow
Files go to the Recycle Bin by default. Permanent deletion requires an explicit double confirmation from you.
Developer Folder Awareness
Recognises common developer and project directories (node_modules, .git, build output) and flags them appropriately.
Scan History
Keeps a log of previous scans so you can review what was found and actioned without rescanning from scratch.
Getting Started
How It Works
Download
Download the installer or portable version. No account, no registration, no personal data collected.
Scan
Select the drives or folders to scan. OS Cleaner analyses your files and presents a clear, categorised report.
Review & Clean
Review duplicates, large files, and risk scores. Choose what to remove - then confirm. Nothing is deleted without your say-so.
Done
Your drive is cleaner. Check the scan history anytime to review what was actioned.
Safety-First Design
Built to Protect Your Files
Many disk cleanup tools delete aggressively. OS Cleaner is designed around the opposite principle - maximum information, minimum risk, full user control.
- No automatic deletion under any circumstances
- Recycle Bin deletion is the default - files are recoverable
- Permanent deletion requires two explicit confirmations
- System files and protected directories are flagged, not silently skipped
- Scan history for accountability and review
- Developer folders detected and handled with appropriate caution
Our Safety Promise
OS Cleaner will never delete a file without your explicit confirmation. You can run a full scan, review every finding, and close the application - and nothing on your drive will have changed.
Compatibility
System Requirements
Get OS Cleaner
Download - Free, Always
OS Cleaner is free. No ads, no premium tier, no registration. A practical product from NSArrows.
Windows SmartScreen Notice
OS Cleaner is not yet code-signed, which means Windows SmartScreen may show a warning when you run it. This is a standard Microsoft prompt for any unsigned application - not an indication of a threat.
To proceed: click "More info" on the SmartScreen dialog, then click "Run anyway". The application is safe - it does not modify the registry, install background services, or connect to the internet.
Preview
Application Screenshots
Screenshot 1
Coming Soon
Coming Soon
Screenshot 2
Coming Soon
Coming Soon
Screenshot 3
Coming Soon
Coming Soon
Replace screenshot placeholders in assets/images/os-cleaner/ with real application screenshots.
Ideal For
Who Should Use OS Cleaner
Developers
Clean up build artefacts, redundant node_modules, old project backups, and stale binaries - without accidentally nuking something important.
Business Users
Maintain a clean, fast Windows machine without needing to understand which system files to avoid. OS Cleaner handles the complexity.
IT Administrators
Run quick disk audits on company machines to surface storage issues before they become problems.
What's New
Version 2.0.0 Release Notes
Initial public release — June 2026
- Duplicate file detection across selected drives and folders
- Large file discovery with sortable file list
- Risk score badge system (Safe / Caution / Review)
- Recycle Bin deletion as default action
- Permanent delete with two-step confirmation
- Scan history log
- Developer-aware folder detection (node_modules, .git, build/dist)
- System file awareness - protected files are flagged, not silently excluded
This is the first public release. Additional features, UI improvements, and performance enhancements are planned for future versions. Feedback is welcome via the contact page.
Questions
Frequently Asked Questions
Yes - completely free. No premium version, no in-app purchases, no account required. Download and use it.
Yes. OS Cleaner does not delete anything automatically. Every deletion action requires your explicit confirmation. Files go to the Recycle Bin by default, so they can be recovered if needed.
OS Cleaner is not yet code-signed with a commercial certificate. Windows SmartScreen flags all unsigned applications by default - this is a Microsoft policy, not an indicator that the software is harmful. Click "More info" then "Run anyway" to proceed.
No. OS Cleaner is a standalone application with no internet connectivity. It does not send any data externally.
OS Cleaner is built for Windows 10 and Windows 11 (64-bit). Earlier versions of Windows are not officially supported.
By default, OS Cleaner sends files to the Recycle Bin - not permanent deletion. You can restore them from the Recycle Bin as you normally would. Permanent deletion requires an additional confirmation step.
OS Cleaner is a free product from NSArrows Innovations - a demonstration of practical AI-assisted software development. It is independent of NSArrows' training and consulting services, though it reflects the same philosophy: practical tools built for real use.