# Open-source Windows hardening

4 open-source Windows hardening rated against public privacy criteria.

1. [HardenTools](https://privacyratings.com/windows-hardening/hardentools/): B (80/100). A utility that disables risky Windows, Microsoft Office, Adobe Reader and LibreOffice features that are commonly abused by malware.
2. [privacy.sexy](https://privacyratings.com/windows-hardening/privacy-sexy/): B (80/100). An open source web and desktop app that generates and runs scripts to change privacy and security settings and remove telemetry on Windows, macOS and Linux.
3. [Win11Debloat](https://privacyratings.com/windows-hardening/win11debloat/): B (80/100). An open source PowerShell script that removes preinstalled apps, disables telemetry and changes other settings on Windows 10 and 11, with options to undo changes.
4. [Windows Spy Blocker](https://privacyratings.com/windows-hardening/windows-spy-blocker/): B (80/100). A Go tool that blocks Windows telemetry and tracking through firewall rules and hosts files built from captured network traffic. It is no longer actively maintained.

Source: https://privacyratings.com/open-source/windows-hardening/