# jj-vcs/jj

A Git-compatible VCS that is both simple and powerful

Repository: https://github.com/jj-vcs/jj
Canonical: https://ross.abutalabs.com/products/jj
Homepage: https://jj-vcs.dev
Language: Rust
License: Apache-2.0
License Family: permissive
Last push: 2026-08-26T23:54:42+00:00

## Health v2 (maintenance only)
Score: 98/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 96, longevity 100
- inputs: {"age_days": 2084, "days_push": 7, "days_rel": 28, "gap_med": 28, "n_releases_24m": 26}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 31211, forks 1187 (observed 2026-08-28T04:11:56.609791+00:00)

## What it is
Jujutsu (jj) is a Git-compatible version control system written in Rust with a simple, powerful command-line interface. It uses Git repositories as a storage backend while offering a redesigned UX, first-class conflict handling, and pluggable storage abstractions.

## Use cases
- replace git with a simpler command-line workflow
- work with git repos using a better vcs ui
- track code changes with automatic conflict handling
- manage branches and rebases without a staging area
- collaborate on github while using a different vcs frontend

## When to choose
- you find git's UX confusing and want a simpler mental model
- you want git compatibility with cleaner conflict resolution and operation log
- you work across many branches and rebases frequently

## When to avoid
- your team requires plain git tooling and hooks everywhere
- you need GUI-centric version control workflows
- you rely on git features jj stores outside git, like bookmarks, in third-party tooling

## Facets
- artifact type: cli-tool
- maturity: active
- function: version-control, cli, developer-tools
- domain: version-control, developer-tools
- platform: windows, cli, rust
- tags: git-compatible, vcs, jujutsu, mercurial-inspired, conflict-handling, command-line, linux, macos

## Member repositories
- jj-vcs/jj (main) score 98

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:11:56.609791+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 2026-08-29T16:52:19.004739+00:00, confidence not recorded.
  - readme: https://github.com/jj-vcs/jj (fetched 2026-08-28T04:11:56.609791+00:00, sha b6c8b737fc21)
  - homepage: https://jj-vcs.dev (fetched 2026-08-29T07:49:25.900874+00:00, sha 9b69a8243237)
- Data as of 2026-08-30T08:39:29.467469+00:00.