# contiki-ng/contiki-ng

Contiki-NG: The OS for Next Generation IoT Devices

Repository: https://github.com/contiki-ng/contiki-ng
Canonical: https://ross.abutalabs.com/products/contiki-ng
Homepage: https://www.contiki-ng.org/
Language: C
License: BSD-3-Clause
License Family: permissive
Topics: iot, contiki-ng, wsn, 6lowpan, 6lowpan-border-router, rpl, tsch, 6tisch
Last push: 2026-08-24T11:32:22+00:00

## Health v2 (maintenance only)
Score: 88/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 99, release rhythm 66, longevity 100
- inputs: {"age_days": 3399, "days_push": 9, "days_rel": 19, "gap_med": 295.5, "n_releases_24m": 3}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1521, forks 771 (observed 2026-08-28T04:04:57.836362+00:00)

## What it is
Contiki-NG is an open-source, cross-platform operating system for next-generation IoT devices, forked from the original Contiki OS. It focuses on dependable low-power communication using standard protocols such as IPv6/6LoWPAN, 6TiSCH, RPL, and CoAP.

## Use cases
- build firmware for low-power IoT devices
- run IPv6/6LoWPAN networking on constrained hardware
- implement RPL routing in wireless sensor networks
- develop TSCH/6TiSCH time-slotted mesh networks
- prototype CoAP applications on embedded devices
- simulate IoT networks before deploying to hardware

## When to choose
- you need an OS for constrained, battery-powered IoT devices
- you want standards-based low-power mesh networking (6LoWPAN, RPL, TSCH)
- you need a mature, well-documented IoT OS with an active community
- you want to simulate IoT networks on your workstation before flashing hardware

## When to avoid
- you are building applications for Linux-class gateway devices with ample resources
- you need a real-time OS with a small footprint but no networking stack
- your project targets Android, iOS, or desktop platforms
- you prefer an RTOS like Zephyr or FreeRTOS with broader vendor board support

## Facets
- artifact type: application
- maturity: active
- function: networking, security, embedded, middleware
- domain: iot, embedded-systems, networking, operating-systems
- platform: embedded, iot, cross-platform
- tags: contiki-ng, 6lowpan, rpl, tsch, 6tisch, coap, wireless-sensor-networks, low-power, ipv6, operating-system, linux, macos

## Member repositories
- contiki-ng/contiki-ng (main) score 88

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:04:57.836362+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 2026-08-30T04:31:51.836070+00:00, confidence not recorded.
  - readme: https://github.com/contiki-ng/contiki-ng (fetched 2026-08-28T04:04:57.836362+00:00, sha 6580eaa7626c)
  - homepage: https://www.contiki-ng.org/ (fetched 2026-08-29T11:35:21.830505+00:00, sha 00ec99751ddd)
- Data as of 2026-08-30T08:39:29.467469+00:00.