Get Ferrite for Windows.

Free forever — real system-level enforcement, per-app and by rule. Zero telemetry. A published SHA-256 you can verify yourself.

Windows

10 / 11 · 64-bit · NSIS installer

Download .exe

Includes: Full rule engine (app · IP · port · domain · time · geo) + 100 protocols identified; Pro reads inside 30+.
Pro unlock: Same download for every tier — Pro features are license-locked until you start the 3-day in-app trial or activate a FERRITE_ key from checkout.
File: Ferrite_1.0.3_x64-setup.exe
SHA-256: e7718216e7e6b6b7214d3cd987bd75fae26972fee0305fdc5d955c75673ba23f
Updater: minisign — bundled public key, signed auto-updates

Windows will flag it as “unknown publisher” — here’s exactly what to click

New publishers start at zero reputation with SmartScreen — it’s a download-history check, not a safety verdict, and it clears in three clicks.

1
Double-click the .exe. Windows shows a blue “Windows protected your PC” screen.
2
Click More info.
3
Click Run anyway, then approve the admin (UAC) prompt.

Don’t take our word for it — verify the exact bytes before you run it:

Get-FileHash .\Ferrite_1.0.3_x64-setup.exe -Algorithm SHA256

Expected hash starts e7718216e7e6b6b7… (full value in the table above). Ferrite sends zero telemetry either way — your connection data never leaves your machine, signed or not.

Operating system

Windows 10 / 11 · 64-bit · WebView2 (the installer fetches it if it is missing)

Footprint

~65 MB installed (a download under 30 MB) · about 60 MB of memory for the background service, about 0.5 GB while the window is open

Permissions

Admin to install (one prompt); after that the app runs as a standard user and the Ferrite service does the blocking

macOS (system extension) and Linux (eBPF / TC) are on the roadmap. Ferrite includes cryptography and isn’t available in embargoed regions or to sanctioned parties.