Crabbox — Run Any Repository Command in the Right Box

One CLI that takes the working tree you already have, runs it somewhere else (a container, a VM, an SSH host, or a managed sandbox), and streams the result back, so you get an edit-run loop without writing a CI job for every iteration. MIT licensed, coordinator runs on your own Node plus Postgres or on Cloudflare Workers, and it claims 81 providers. Their line is "Crabbox Software Is Free. Compute Isn't."