# rauc/rauc

Safe and secure software updates for embedded Linux

Repository: https://github.com/rauc/rauc
Canonical: https://ross.abutalabs.com/products/rauc
Homepage: https://rauc.io
Language: C
License: LGPL-2.1
License Family: copyleft
Topics: embedded, linux, update, client, iot, rauc, ota, fota, software-update, firmware-update, firmware-updates, ota-firmware-updates
Last push: 2026-08-24T16:43:30+00:00

## Health v2 (maintenance only)
Score: 87/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 99, release rhythm 65, longevity 100
- inputs: {"age_days": 4134, "days_push": 9, "days_rel": 159, "gap_med": 74.5, "n_releases_24m": 5}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1232, forks 266 (observed 2026-08-28T04:04:04.502151+00:00)

## What it is
RAUC (Robust Auto-Update Controller) is an open-source update client and host tool for embedded Linux systems that manages fail-safe, atomic, cryptographically signed firmware/software updates. It supports A/B redundant setups, multiple bootloaders, HTTP(S) streaming, and bundle creation and verification.

## Use cases
- update firmware on embedded linux devices over the air
- create signed update bundles for an A/B root filesystem setup
- stream updates over https without intermediate storage on the target
- integrate OTA update management into a Yocto or Buildroot based device
- verify cryptographic signatures of firmware update packages
- perform atomic bootloader and partition updates on eMMC or UBI
- control update installation and progress from a custom application via D-Bus

## When to choose
- you maintain embedded Linux devices needing fail-safe A/B or recovery updates
- you require X.509 signed and optionally encrypted update bundles
- you need support for diverse storage like SquashFS, UBI, eMMC boot partitions, or raw flash
- you want bootloader integration with u-boot, barebox, grub, or EFI
- you need a D-Bus API for application-level update control

## When to avoid
- you need updates for non-Linux embedded platforms like RTOS or microcontrollers
- you want a fully managed cloud OTA service rather than a self-hosted update client
- your target is a desktop or server Linux distribution with package-based updates

## Facets
- artifact type: application
- maturity: stable
- function: security, cryptography, deployment, cli, configuration-management
- domain: embedded-systems, iot, operating-systems, security
- platform: embedded, cli, iot
- tags: ota-updates, firmware-update, a-b-partitioning, update-bundles, bootloader-integration, dbus-api, delta-updates, embedded-linux, devops, linux

## Member repositories
- rauc/rauc (main) score 87

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:04:04.502151+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 2026-08-30T08:22:22.846990+00:00, confidence not recorded.
  - readme: https://github.com/rauc/rauc (fetched 2026-08-28T04:04:04.502151+00:00, sha fba0aafd720f)
  - homepage: https://rauc.io (fetched 2026-08-29T12:21:55.027148+00:00, sha e4783f482874)
- Data as of 2026-08-30T08:39:29.467469+00:00.