Port Zero eliminates port conflicts by assigning stable *.portzero.local domains instead of port numbers, preventing EADDRINUSE errors.
It supports running multiple development branches simultaneously using git worktrees, each with its own unique URL.
Cloud tunnels extend local domains to devices like phones and tablets with HTTPS, enabling demo and preview sharing.
Port Zero offers agent-ready features, including MCP tools for coding agents to manage tunnels without manual configuration.
Pricing includes a free, open-source tier for local tunnels, with paid plans starting at $49/month for unlimited cloud tunnels and additional features.