PC Operating Systems

If you are currently using a operating system like Microsoft Windows or Apple macOS, you should pick an alternative here. Please note that fully libre operating systems may not push non-free vulnerability fixes.

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Warning

Worth Mentioning

OpenBSD - A project that produces a free, multi-platform 4.4BSD-based UNIX-like operating system. Emphasizes portability, standardization, correctness, proactive security and integrated cryptography.

Arch Linux - A simple, lightweight Linux distribution. It is composed predominantly of free and open-source software, and supports community involvement. Parabola is a completely open source version of Arch Linux.

Whonix - A Debian GNU/Linux based security-focused Linux distribution. It aims to provide privacy, security and anonymity on the internet. The operating system consists of two virtual machines, a "Workstation" and a Tor "Gateway". All communication are forced through the Tor network to accomplish this.

Subgraph OS - Another Debian based Linux distribution, it features security hardening which makes it more resistant to security vulnerabilities. Subgraph runs many desktop applications in a security sandbox to limit their risk in case of compromise. By default, it anonymizes Internet traffic by sending it through the Tor network. Note: It is still in alpha, and much testing and bug fixing still has to be done.