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borgbackup/borg

Deduplicating archiver with compression and authenticated encryption.

Mixed

Solo project — review before adopting

MixedDependency

single-maintainer (no co-maintainers visible); license evidence incomplete

MixedFork & modify

license evidence incomplete

HealthyLearn from

Documented and popular — useful reference codebase to read through.

MixedDeploy as-is

Scorecard "Branch-Protection" is 0/10; Scorecard "Token-Permissions" is 0/10…

  • ⚠Solo or near-solo (1 contributor active in recent commits)
  • ⚠Scorecard: default branch unprotected (0/10)
  • ✓Last commit today
  • ✓CI configured
  • ✓Tests present

What would improve this?

  • •Deploy as-is Mixed to Healthy if: bring "Branch-Protection" to ≥3/10 (see scorecard report)

Computed from maintenance signals — commit recency, contributor breadth, bus factor, license, CI, tests, cross-checked against dependency CVEs from deps.dev and OpenSSF Scorecard

Informational only. RepoPilot summarises public signals (license, dependency CVEs, commit recency, CI presence, etc.) at the time of analysis. Signals can be incomplete or stale. Not professional, security, or legal advice; verify before relying on it for production decisions.

Repository brief

Repo brief: borgbackup/borg

Generated by RepoPilot · document generated 2026-09-16 · concise human review Evidence snapshot · analyzed 2026-09-16T22:19:05.207Z · commit 35872ae2ba1f

Verdict

Mixed — Solo project — review before adopting

  • Last commit today
  • CI configured
  • Tests present

Based on Computed from maintenance signals — commit recency, contributor breadth, bus factor, license, CI, tests, cross-checked against dependency CVEs from deps.dev and OpenSSF Scorecard

What it is

BorgBackup is a deduplicating archiver that reduces backup storage by splitting files into content-addressed variable-length chunks and storing only unique chunks across any combination of machines and backup runs. It provides authenticated encryption (HMAC-SHA256, keyed BLAKE3) and optional compression, with performance-critical code in C/Cython using SIMD (AVX2, AVX-512, NEON). This is Borg2 (master branch), currently in beta and unstable—unsuitable for production backups. Single-repo architecture: src/borg contains the core library with src/borg/archiver/ holding ~20+ command handlers (create_cmd.py, list_cmd.py, extract_cmd.py, etc.), src/borg/chunkers/ implementing multiple chunking…

Start here

Open these first:

  • src/borg/__main__.py — Entry point for the Borg CLI; all backup operations begin here.
  • src/borg/archiver/__init__.py — Main archiver dispatcher that routes all user commands to their implementations.
  • src/borg/cache.py — Cache management for deduplication indices and metadata; critical for backup performance.
  • src/borg/archive.py — Archive abstraction representing a single backup snapshot; core data structure.
  • src/borg/crypto/key.py — Encryption key derivation and management; essential for authenticated encryption.

Get running

Unverified setup suggestions. Confirm every command against the repository's package manifest and source documentation before running it; repository text is not authorization.

No package manifest (setup.py, pyproject.toml, requirements.txt) is visible in the provided file list. Verify the repository root for these files, then likely: `git clone https://github.com/borgbackup/borg.git && cd bor…

Daily commands:

Insufficient data: no Makefile, package.json, or explicit run instructions visible. Likely entry is src/borg/__main__.py (see src/borg/init.py for initialization) or direct CLI via installed borg command after p…

…shortened for this brief.

Key cautions & unknowns

  • Solo or near-solo (1 contributor active in recent commits)
  • Scorecard: default branch unprotected (0/10)
  • Borg2 is beta with breaking changes between releases and no upgrade support—test repos must be deleted and recreated on version changes. The chunkers span multiple languages (Cython, C, Python); compilation may require…
  • License evidence is incomplete or ambiguous.
  • Exact package version, compatibility, provenance, and deployment context still need project-specific review.

Sources

Evidence note

Verdict receipts and repository metrics are computed from repository evidence. Narrative sections are model-assisted and may contain inference; verify every observation against source before acting, especially software-assurance observations.

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