End-to-end encrypted IPv6 networking to connect worlds

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Yggdrasil is an early-stage implementation of a fully end-to-end encrypted IPv6 network. It is lightweight, self-arranging, supported on multiple platforms and allows pretty much any IPv6-capable application to communicate securely with other Yggdrasil nodes. Yggdrasil does not require you to have IPv6 Internet connectivity - it also works over IPv4.

Although Yggdrasil shares many similarities with cjdns, it employs a different routing algorithm based on a globally-agreed spanning tree and greedy routing in a metric space, and aims to implement some novel local backpressure routing techniques. In theory, an Yggdrasil network should scale well on networks with internet-like topologies. Take a look at the About page for a detailed overview.

Project Status

The project is currently in very early stages but it is being actively developed. We have already passed our first alpha release and are now regularly releasing updates.

A small number of users have been using and stress-testing Yggdrasil quite heavily for a number of purposes, including but not limited to secure remote access (SSH and VNC), access to Matrix, Jabber and IRC servers (including a Matrix-IRC bridge that runs solely over Yggdrasil) and even some video streams, large file transfers and performance tests.

It is entirely possible that occasional breaking changes may still happen in future versions but generally Yggdrasil works well and has proven to be reasonably stable so far, with recent builds reaching weeks of uptime without crashes or failures.

Binaries are automatically built each time that we commit to the Git repository for a number of platforms. Feel free to download them, play with them, stress-test them or even use them in your own environments. However, be prepared to upgrade frequently and we wouldn’t recommend relying on Yggdrasil for anything mission-critical at this stage!


Yggdrasil is written in Go. The codebase is fairly small and easy to navigate. It has been tested on a number of platforms (including Linux, Windows, macOS, NetBSD, FreeBSD, OpenBSD and Ubiquiti EdgeOS) although with various minor caveats. See the Platforms page for more information.

Get Involved

If you are interested in or would like to get involved in the Yggdrasil project, please feel free to join us!