# borgbackup/borg

Deduplicating archiver with compression and authenticated encryption.

Repository: https://github.com/borgbackup/borg
Canonical: https://ross.abutalabs.com/products/borg
Homepage: https://www.borgbackup.org/
Language: Python
License: NOASSERTION
License Family: other
Topics: python, compression, ssh, deduplication, backup, borgbackup, encryption
Last push: 2026-08-26T12:56:14+00:00

## Health v2 (maintenance only)
Score: 89/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 69, longevity 100
- inputs: {"age_days": 4131, "days_push": 7, "days_rel": 46, "gap_med": 107, "n_releases_24m": 6}
- 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 13654, forks 867 (observed 2026-08-28T04:11:04.472456+00:00)

## What it is
BorgBackup (Borg) is a deduplicating backup program with optional compression and authenticated encryption. It stores data as content-defined chunks so only changes are saved, making it efficient for daily backups to untrusted targets.

## Use cases
- back up my laptop daily without wasting disk space
- encrypt backups to an untrusted remote server
- deduplicate backups across multiple machines
- mount an old backup and browse previous file versions
- run efficient nightly backups of VMs or raw disks
- compress and encrypt archives before offsite storage

## When to choose
- you need space-efficient, deduplicated backups with full version history
- you want authenticated encryption so the backup target never sees plaintext
- you prefer a simple one-command CLI with no daemons or agents
- you need to mount archives as filesystems via FUSE to restore individual files

## When to avoid
- you need a GUI-driven backup solution
- you want continuous real-time backup rather than scheduled snapshots
- you need block-level disk imaging or bare-metal disaster recovery
- you require Windows-native support as a primary platform

## Facets
- artifact type: cli-tool
- maturity: active
- function: backup, compression, cryptography, cli, file-system
- domain: files, security, developer-tools, self-hosted
- platform: bsd, cli, python
- tags: deduplication, authenticated-encryption, fuse-mount, ssh, incremental-backup, content-defined-chunking, linux, macos

## Member repositories
- borgbackup/borg (main) score 89

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:11:04.472456+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 2026-08-29T17:13:08.445901+00:00, confidence not recorded.
  - readme: https://github.com/borgbackup/borg (fetched 2026-08-28T04:11:04.472456+00:00, sha cc85558a5834)
  - homepage: https://www.borgbackup.org/ (fetched 2026-08-29T08:07:37.359674+00:00, sha 118927c833d6)
- Data as of 2026-08-30T08:39:29.467469+00:00.