# antirez/dump1090

Dump1090 is a simple Mode S decoder for RTLSDR devices

Repository: https://github.com/antirez/dump1090
Canonical: https://ross.abutalabs.com/products/dump1090
Language: C
License: BSD-3-Clause
License Family: permissive
Last push: 2026-02-15T14:55:05+00:00

## Health v2 (maintenance only)
Score: 62/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 67, release rhythm 35, longevity 100
- inputs: {"age_days": 4988, "days_push": 199, "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 2927, forks 1449 (observed 2026-08-28T04:07:30.469226+00:00)

## What it is
Dump1090 is a Mode S (ADS-B) message decoder for RTL-SDR USB radio receivers, written in C. It decodes aircraft transponder signals, displays detected aircraft in an interactive terminal view, and serves a live traffic map over an embedded HTTP server.

## Use cases
- decode ADS-B aircraft signals from an RTL-SDR dongle
- track nearby airplanes on a live map in the browser
- stream Mode S messages over TCP port 30003
- decode raw IQ samples from a recorded file
- correct CRC errors in weak ADS-B messages
- build a low-cost aircraft tracking receiver

## When to choose
- you have an RTL2832 SDR dongle and want a simple, minimal Mode S decoder
- you need robust decoding of weak signals with single-bit CRC error correction
- you want a self-contained tool with an embedded HTTP map server and no heavy dependencies

## When to avoid
- you need a feature-complete decoder with Beast output, SDR driver abstraction, or active community support - consider forks like dump1090-mutability or readsb
- you don't have RTL-SDR hardware or Mode S radio signals to decode
- you need a maintained GUI application rather than a command-line tool

## Facets
- artifact type: cli-tool
- maturity: maintenance
- function: parser, http-server, cli, networking
- domain: hardware, developer-tools
- platform: cpp, cli, cross-platform
- tags: ads-b, mode-s, rtl-sdr, sdr, aircraft-tracking, radio-decoding, real-time, maps, linux

## Member repositories
- antirez/dump1090 (main) score 62

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:07:30.469226+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 2026-08-30T07:33:35.499559+00:00, confidence not recorded.
  - readme: https://github.com/antirez/dump1090 (fetched 2026-08-28T04:07:30.469226+00:00, sha 3e20ee583ac2)
- Data as of 2026-08-30T08:39:29.467469+00:00.