OfflineShield
Protection that stays out of the way.
Free Windows antivirus. Offline-first. No account. No upsell theater.
Open-source local malware scanning for Windows 10 and 11, with releases and source hosted on GitHub.
What it does
One job: find threats on your PC and let you decide what happens next.
- Offline-first Signatures and heuristics run locally. Optional intel sync stays optional.
- Real scans Quick, full, custom, scheduled, and realtime file watching.
- Encrypted quarantine AES-GCM with a DPAPI-protected key. Restore or delete on your terms.
- Quiet by default Tray mode, start with Windows, weekly scan Sundays at 02:00.
Get OfflineShield
Self-contained Windows x64 build. MIT open source.
Download OfflineShield.exeSource code and release history live on GitHub. OfflineShield works locally without an account or cloud sign-in.
Requires Windows 10/11. SmartScreen may warn on first run for unsigned builds — choose More info → Run anyway.