# cjdelisle/cjdns

An encrypted IPv6 network using public-key cryptography for address allocation and a distributed hash table for routing.

Repository: https://github.com/cjdelisle/cjdns
Canonical: https://ross.abutalabs.com/products/cjdns
Language: C
License: GPL-3.0
License Family: copyleft
Topics: cjdns, mesh, mesh-networks, fcp, networking, routing, dht, cryptography, hyperboria
Last push: 2026-07-09T19:50:40+00:00

## Health v2 (maintenance only)
Score: 73/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 91, release rhythm 35, longevity 100
- inputs: {"age_days": 5677, "days_push": 55, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 5406, forks 601 (observed 2026-08-28T04:09:17.676790+00:00)

## What it is
Cjdns is an encrypted IPv6 networking implementation that uses public-key cryptography for address allocation and a distributed hash table for routing. It provides near-zero-configuration mesh networking designed to avoid security and scalability issues of conventional networks.

## Use cases
- build a decentralized mesh network
- create an encrypted overlay network over the internet
- set up a VPN alternative with cryptographic addressing
- join the Hyperboria mesh community
- run a cjdns NAT gateway for a LAN
- peer nodes without manual IP configuration

## When to choose
- you want encrypted, self-configuring IPv6 networking between peers
- you're building or joining a community mesh network
- you need a VPN-like tunnel with cryptographically derived addresses

## When to avoid
- you need mainstream VPN protocols with broad client support
- you require IPv4 connectivity or compatibility with standard internet routing
- you want a turnkey solution with a GUI and minimal setup

## Facets
- artifact type: application
- maturity: active
- function: networking, cryptography, routing, security
- domain: networking, security, privacy, microservices
- platform: cross-platform, cli
- tags: mesh-networking, ipv6, dht, vpn, hyperboria, p2p, encrypted-networking, linux, macos

## Member repositories
- cjdelisle/cjdns (main) score 73

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:09:17.676790+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 2026-08-29T17:57:47.284071+00:00, confidence not recorded.
  - readme: https://github.com/cjdelisle/cjdns (fetched 2026-08-28T04:09:17.676790+00:00, sha 94e27f3cc66d)
- Data as of 2026-08-30T08:39:29.467469+00:00.