Sange

Local-first developer-experience layer between humans and their version-control systems — eliminating boilerplate, enforcing safety, embedding AI assistance into every commit, branch, and release, and providing a secure dashboard (local or self-hosted) for fine-grained review, approval, scheduling, and orchestration.

Status: v0.1.0 tagged (2026-05-14), Phase 1 CLI surface complete on main. The architecture is locked (.design/sange-architecture.md, v4.4). pip install sange lights up once the PyPI trusted-publisher configuration completes — see docs/release.md::Step 0 and the v0.1.0 known-issues in CHANGELOG.md. Multi-arch Docker image available at ghcr.io/simsange/sange:v0.1.0. Track ongoing progress at .design/plans/checklist.md.

What Sange is

• A workflow layer that wraps your chosen VCS (Git, SVN, Mercurial, Perforce) — never a replacement for it.
• A commit message lifecycle (draft → pending_review → approved → committed → pushed → archived) with AI generation, prompt enhancer, and ≥50 normalized presets.
• A release engine with signed bundles, SBOM, SLSA 3 provenance, and 6 destinations (GitHub / GitLab / OCI / S3 / generic registry / filesystem).
• A history-purge subsystem with 8 pre-flight gates, hash-chained audit JSONL, typed-phrase confirmation, and per-VCS executors.
• A local-first dashboard (Laravel 13 + Livewire 4 + WebAuthn passkeys) approachable to non-developers — accessible at https://sange.test by default; remote access via Cloudflare Tunnel / Tailscale / WireGuard / VPS.

What Sange is not

• Not a fork of any VCS.
• Not a competing wire protocol or repository host.
• Not a closed-source SaaS — it's local-first, Apache-2.0, self-hostable.

Quickstart

The installer ships at the v0.1 release. Until then, install from source:

git clone https://github.com/simsange/sange.git
cd sange
python -m venv .venv && source .venv/bin/activate
pip install -e ".[dev,tui]"

# Verify install:
python -c "import sange; print(sange.__version__)"

When the v0.1 release ships:

# macOS / Linux:
curl -fsSL https://sange.sh/install.sh | sh   # checksum + sigstore verified

# Windows (PowerShell):
iwr -useb https://sange.sh/install.ps1 | iex

Documentation

All documentation lives under docs/. The canonical reference is the architecture deliverable in .design/sange-architecture.md; reader-oriented manuals are split per-tool, per-topic.

Live now:

Planned (each lands as the relevant T-G-NNN task in .design/plans/checklist.md flips completed):

Audience

Sange is designed to be approachable to seven personas — non-developer founders, CTOs, cyber-security reviewers, junior engineers, senior staff engineers, DevOps/SRE, and OSS maintainers. A feature usable only by senior engineers, with no equivalently-safe path for the others, is a design defect. See .design/plans/positioning.md.

Etymology

Named after the sengi (Swahili for the elephant shrew), stylized as "Sange" for branding — short, memorable, evocative of the agile, resilient nature of the animal. See ADR-014 for the framing rationale.

License

Sange is licensed under the Apache License 2.0 (ADR-007). The patent grant matters for the plugin ecosystem and enterprise adoption.

Copyright © 2026 Simtabi LLC.

Reporting and contact

• Bugs / feature requests: https://github.com/simsange/sange/issues
• Security: opensource@simtabi.com — see SECURITY.md
• General contact (OSS): opensource@simtabi.com
• Maintainer: Imani Manyara — imani@simtabi.com
• Product page: https://opensource.simtabi.com/products/sange