• Whonix

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After TAILS, Whonix is without a doubt the second best anonymous operating system you can get your hands on.

Like TAILS, WHONIX also uses Tor to keep your online activity anonymous, like a ninja on a dark night. Everything is routed through TOR, without requiring any additional actions from you.

Oh, and it's a live OS too. This means that you can run it directly from a USB stick.

I like WHONIX's “separation” (not from his wife)! It uses virtualization to separate your various activities and components, ensuring that no leaks or compromises can interfere with your privacy.

Streaming isolation is another component of his separation superpower. With stream isolation, WHONIX splits your internet connections into different channels.

These features ensure that even if one component/channel is hacked, your system is still safe.

WHONIX uses DNSCrypt to encrypt all DNS traffic, ensuring that your data remains safe and sound. In a normal operating system, you will need a separate VPN for this, but even this sometimes fails.

WHONIX is also very selective about what goes in or out. Its firewall blocks all incoming and outgoing traffic by default, allowing only traffic that is explicitly approved by you.

Like TAILS, it also has dozens of built-in tools that facilitate encrypted communications, mailing, web browsing, and other everyday activities.

Finally, WHONIX is like an open book, and that's a good thing! Its open source code allows anyone to inspect, verify and audit the code, ensuring there are no hidden backdoors.