They Watch Everything. Hide Deeper.

Cyrethium erases your digital fingerprint across networks, communications, and identity layers. Route through Tor. Leave no metadata behind.

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Officially Endorsing Freedom & Privacy

Why Cyrethium?

Built for those who refuse to be tracked.

Total Anonymity

Force all system traffic through Tor network. Non-Tor traffic is rejected automatically. Additional out of box I2P,DNSCrypt-Proxy support.

Hardened Security

Kernel to userspace hardening. Every layer fortified against exploitation .Based on Debian, stable and secure.

Completely Open Source

Cyrethium is completely open source and open to all kinds of audits. Every Cyrethium Project, including the website, is completely free software

Core Security Tools

Powerful modules that fuel Cyrethium's privacy engine.

CyrethOnion

Network

Force all system traffic through Tor network with automatic leak prevention.

  • Transparent Tor routing for all applications
  • Automatic DNS leak protection
  • Tor bridge support for censorship bypass
  • Kill switch for non-Tor traffic

Hardened Firefox

Browser

Fortified browser with advanced privacy extensions and security configurations.

  • Pre-configured privacy extensions
  • Fingerprinting resistance
  • JavaScript hardening
  • Automatic HTTPS enforcement

Amnesic Firefox

Browser

Zero-trace browsing that erases all history, cookies, and cache on exit.

  • Complete session amnesia
  • No persistent storage
  • Memory-only operation
  • Automatic cleanup on close

Chaosec

Defense

Traffic obfuscation tool that mixes real traffic with decoy patterns.

  • Traffic pattern randomization
  • Timing attack mitigation
  • Correlation attack resistance
  • MITM protection layer

I2P Integration

Network

Pre-configured I2P network for anonymous peer-to-peer communication.

  • Hidden service hosting
  • Encrypted tunnel routing
  • Decentralized architecture
  • Built-in eepsite browser

DNSCrypt Proxy

Privacy

Encrypted DNS queries to prevent surveillance and manipulation.

  • DNS-over-HTTPS support
  • Query encryption
  • DNSSEC validation
  • Anti-tracking filters

Choose Your Edition

Different threat models. Different solutions.

Most Popular

Cyrethium

Full-featured edition with all security tools, privacy features, and custom applications.

  • ~30 integrated security tools
  • Customized MATE Desktop
  • Advanced threat detection
  • Cryptocurrency security suite
2.7 GB • Advanced Users

Cyrethium Lite

Simplified GUI-focused version with essential privacy tools for everyday use.

  • Essential privacy tools
  • User-friendly interface
  • Lightweight footprint
  • Quick setup
2.1 GB • Beginners

Root0Edition (Respin)

GNOME Wayland edition with minimal tools for maximum security and reduced attack surface.

  • Minimal attack surface
  • GNOME Wayland
  • Essential tools only
  • Maximum stability
2.1 GB • Security Focused

Zenrethium (Respin)

Minimal respin with pure Cyrethium core and no pre-installed tools.

  • Pure base system
  • No pre-installed tools
  • Maximum customization
  • DIY approach
2.2 GB • Experts

Download & Verify

All downloads are hosted on SourceForge. Always verify checksums before installation.

Cyrethium V1R

2.7 GB

Download
SHA256: 4f67420a6ac8a8e8d9b4f6b301ea4854db321bd0459601ed015aad2ce7240dc3

Cyrethium Lite V1R

2.6 GB

Download
SHA256: effd455b1abfed8f800e4c5c3e1502e6619e2070a83559334eb59ba06ea1316b

Root0Edition 1.0

2.1 GB

Download
SHA256: 0e938340a8055f7e357ad007ca130a7da360237585392af846199ed109887c11

Zenrethium 1.0

2.2 GB

Download
SHA256: b065340611b34d36d37fe95c8d4771d18e2850c31b68699dd66673bb08110bb6

Important: Verify SHA256 checksums after download. See installation guide for details.