# coturn/coturn

coturn TURN server project

Repository: https://github.com/coturn/coturn
Canonical: https://ross.abutalabs.com/products/coturn
Language: C
License: NOASSERTION
License Family: other
Topics: networking, server, turn
Last push: 2026-08-24T23:23:37+00:00

## Health v2 (maintenance only)
Score: 98/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 97, longevity 100
- inputs: {"age_days": 4065, "days_push": 9, "days_rel": 23, "gap_med": 3.0, "n_releases_24m": 41}
- 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 14350, forks 2271 (observed 2026-08-28T04:11:06.834294+00:00)

## What it is
coturn is a free open-source implementation of TURN and STUN servers written in C, serving as a VoIP/WebRTC media traffic NAT traversal server and gateway. It supports RFC 5766/8489 and related standards, with user databases (SQLite, PostgreSQL, MySQL, Redis), TLS/DTLS, and Prometheus metrics.

## Use cases
- run a TURN server for WebRTC video calls
- NAT traversal for VoIP media traffic
- self-host a STUN server for peer-to-peer connections
- relay media traffic for real-time communication apps
- deploy TURN with Docker for a chat or conferencing app
- provide ICE relay candidates for a browser-based calling app

## When to choose
- you need a battle-tested, standards-compliant TURN/STUN server for WebRTC or VoIP
- you want self-hosted NAT traversal with flexible user database backends
- you need TLS/DTLS support and Prometheus monitoring out of the box

## When to avoid
- you only need a signaling server without media relay
- you want a managed TURN service without operating your own infrastructure
- you need TURN over QUIC or other non-standard transports

## Facets
- artifact type: service
- maturity: stable
- function: networking, proxy, security, http-server
- domain: networking, self-hosted, developer-tools
- platform: windows, self-hosted, cross-platform
- tags: turn-server, stun-server, nat-traversal, voip, webrtc, rfc5766, rfc8489, real-time, linux, macos, docker

## Member repositories
- coturn/coturn (main) score 98

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:11:06.834294+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 2026-08-29T17:12:38.526025+00:00, confidence not recorded.
  - readme: https://github.com/coturn/coturn (fetched 2026-08-28T04:11:06.834294+00:00, sha 7573a8e2557f)
- Data as of 2026-08-30T08:39:29.467469+00:00.