# yggdrasil-network/yggdrasil-go

An experiment in scalable routing as an encrypted IPv6 overlay network

Repository: https://github.com/yggdrasil-network/yggdrasil-go
Canonical: https://ross.abutalabs.com/products/yggdrasil-go
Homepage: https://yggdrasil-network.github.io
Language: Go
License: NOASSERTION
License Family: other
Topics: mesh, mesh-networks, ipv6, e2e-encryption, spanning-tree, decentralized, routing-algorithm, routing-mesh
Last push: 2026-06-19T21:22:02+00:00

## Health v2 (maintenance only)
Score: 87/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 88, release rhythm 77, longevity 100
- inputs: {"age_days": 3169, "days_push": 75, "days_rel": 75, "gap_med": 35, "n_releases_24m": 6}
- flags: no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 5375, forks 350 (observed 2026-08-28T04:09:16.185741+00:00)

## What it is
Yggdrasil is a lightweight userspace software router implementing an experimental, fully end-to-end encrypted IPv6 overlay network with a scalable, self-arranging mesh routing scheme. It works over IPv4 or IPv6, requires no central coordination, and lets any IPv6-capable application communicate securely across the network.

## Use cases
- build a decentralized encrypted mesh VPN between my machines
- connect devices into a self-healing IPv6 overlay network over the internet
- securely access home services without port forwarding or a central server
- set up peer-to-peer networking for IoT or community mesh networks
- give my IPv4-only machines IPv6 connectivity over an encrypted tunnel
- experiment with scalable routing protocols and mesh networking

## When to choose
- you want a decentralized, self-arranging encrypted network with no central authority
- you need IPv6 connectivity between nodes over IPv4 or IPv6 underlays
- you want a lightweight cross-platform mesh that runs on routers, desktops, and mobile devices
- you're experimenting with mesh networking or scalable routing schemes

## When to avoid
- you need a production-hardened, standards-based VPN like WireGuard with guaranteed stability
- you require fine-grained access control or traditional VPN features like split tunneling policies
- you need IPv4 addressing inside the overlay rather than IPv6
- you can't tolerate occasional breaking changes in an alpha-stage protocol

## Facets
- artifact type: application
- maturity: experimental
- function: networking, cryptography, routing, security, p2p
- domain: networking, security, privacy, censorship-circumvention, microservices
- platform: windows, bsd, cross-platform, go
- tags: mesh-network, ipv6-overlay, end-to-end-encryption, vpn, decentralized, self-arranging, userspace-router, spanning-tree, linux, macos, android, ios

## Member repositories
- yggdrasil-network/yggdrasil-go (main) score 87

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:09:16.185741+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T17:58:41.758299+00:00, confidence not recorded.
  - readme: https://github.com/yggdrasil-network/yggdrasil-go (fetched 2026-08-28T04:09:16.185741+00:00, sha 195bbba05b2a)
  - homepage: https://yggdrasil-network.github.io (fetched 2026-08-29T08:52:48.978987+00:00, sha 3432f3d252a0)
- Data as of 2026-08-30T08:39:29.467469+00:00.