onioncat ☆

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Description:
VPN-adapter that provides location privacy using Tor or I2P

Type: Formula | Tracked Since: Dec 28, 2025

Links: Homepage | formulae.brew.sh

Category: Networking

Tags: vpn tor i2p networking privacy ipv6

Install: brew install onioncat

About:
Onioncat creates a transparent network bridge that forwards IPv6 traffic through anonymizing layers like Tor or I2P. It assigns a unique IPv6 address to each hidden service, enabling secure peer-to-peer communication without exposing real IP addresses. This tool effectively turns the anonymity network into a VPN for location privacy.

Key Features:

Transparent IPv6 forwarding over Tor/I2P
Location privacy via hidden service architecture
Supports UDP for VoIP and real-time applications
Zero-configuration networking for peer connections

Use Cases:

Secure remote access to services without exposing IP
Anonymous peer-to-peer communication
Bypassing NAT/firewalls using hidden services

Alternatives:

ZeroTier – ZeroTier provides faster performance but lacks built-in anonymity features
tunnelblick – tunnelblick requires centralized VPN servers instead of decentralized hidden services

Version History

Detected	Version	Rev	Change	Commit
Sep 16, 2025 9:04am		0	VERSION_BUMP	9adfb515
Sep 12, 2024 7:20pm		0	VERSION_BUMP	a5a63014