# faucetsdn/ryu

Ryu component-based software defined networking framework

Repository: https://github.com/faucetsdn/ryu
Canonical: https://ross.abutalabs.com/products/ryu
Homepage: https://ryu-sdn.org
Language: Python
License: Apache-2.0
License Family: permissive
Last push: 2024-04-23T19:53:53+00:00

## Health v2 (maintenance only)
Score: 32/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 5381, "days_push": 862, "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 1603, forks 1175 (observed 2026-08-28T04:05:09.855742+00:00)

## What it is
Ryu is a component-based software defined networking (SDN) framework written in Python, providing well-defined APIs for building network management and control applications. It supports OpenFlow 1.0-1.5, Netconf, OF-Config, and BGP, but the project is no longer maintained and needs new maintainers.

## Use cases
- build an OpenFlow SDN controller in Python
- manage network devices with Netconf and OF-Config
- implement a BGP speaker
- prototype software defined networking applications
- control OpenFlow switches programmatically
- learn SDN and OpenFlow concepts

## When to choose
- you need a Python framework to build OpenFlow controllers
- you want multi-protocol SDN support including Netconf and OF-Config
- you are doing SDN research or learning OpenFlow
- you prefer a component-based architecture with well-defined APIs

## When to avoid
- you need a maintained project - Ryu explicitly states it is not currently maintained
- you want long-term support or active bug fixes
- you are starting a new production SDN deployment - consider OpenStack's os-ken instead
- you need non-Python tooling

## Facets
- artifact type: framework
- maturity: abandoned
- function: networking, middleware, api-framework, routing
- domain: networking, developer-tools, infrastructure-as-code
- platform: python, cross-platform
- tags: sdn, openflow, netconf, of-config, network-controller, bgp, unmaintained, linux

## Member repositories
- faucetsdn/ryu (main) score 32

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:05:09.855742+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 2026-08-30T03:52:23.039133+00:00, confidence not recorded.
  - readme: https://github.com/faucetsdn/ryu (fetched 2026-08-28T04:05:09.855742+00:00, sha f0ece643fb78)
  - homepage: https://ryu-sdn.org (fetched 2026-08-29T11:24:05.794632+00:00, sha 6e42e5f03a25)
  - site_page: https://ryu-sdn.org/resources.html (fetched 2026-08-29T11:24:05.803582+00:00, sha 727cc6803fd0)
- Data as of 2026-08-30T08:39:29.467469+00:00.