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BranchBox

Parallel development for humans and AI agents. Real environments, zero collisions.

The Problem​

Modern development means parallel work — multiple features, AI agents exploring code, experiments running alongside production work. But nothing was built for this:

  • Git branches collide when you switch contexts
  • Docker ports conflict across features
  • Databases leak data between environments
  • AI agents break your main workspace
  • Devcontainers drift out of sync

You've felt this. The "which branch am I on?" moment. The port 3000 conflict. The agent that modified the wrong files.

The Solution​

One command creates a complete, isolated environment:

branchbox feature start "Add OAuth"

That's it. You now have:

  • ✅ Dedicated git worktree and branch
  • ✅ Isolated Docker network and ports
  • ✅ Separate database
  • ✅ Synced devcontainer
  • ✅ Copied environment variables
  • ✅ Optional Cloudflare tunnel for sharing

Work in ../add-oauth/. Your main workspace stays pristine.

See It Work​

# One-time setup
branchbox init

# Start an isolated feature
branchbox feature start "OAuth Integration"

# See what's running
branchbox feature list

# Clean teardown when done
branchbox feature teardown oauth-integration

Who It's For​

  • Engineers juggling multiple features — work on 3 things at once without collisions
  • Teams using AI coding agents — give Claude/Copilot a safe sandbox
  • Anyone tired of "it works on my machine" — real isolation, not hope

Built in Rust. Open source. MIT licensed.