Port Zero - Stable local domains to eliminate port conflicts
Show HN: Port Zero – how I learned to stop worrying and love PORT=0
Port Zero revolutionizes developer networking by assigning stable *.portzero.local domains to every local process, completely eliminating port conflicts and EADDRINUSE errors. By simply setting your port to 0, you can run unlimited git worktrees and AI agents simultaneously without juggling port numbers. The tool seamlessly extends local apps to mobile devices via secure HTTPS cloud tunnels and offers a flat-rate pricing model for team collaboration, feedback, and public demos. Free and open source for local use, Port Zero streamlines the entire development workflow from local testing to sharing live builds.
Set every port to 0 and start your dev server. Port Zero gives each process or container a stable domain — no port to remember, no EADDRINUSE, ever.