Boxes.dev

Boxes.dev is a cloud-only agentic development environment that gives every Claude Code or Codex session its own Linux box, with your dev setup preinstalled and ports forwarded as if it were localhost.

Each fork runs in isolation, so you can fan out parallel agents on the same repo without juggling git worktrees or keeping a laptop open. A scanner ports your local stack to the cloud in one step.

Built by Nick Bushak and Drew Regitsky after a year of full-time agent-driven coding. The free tier ships with 10 box-hours so you can try it on a real project before paying.