Retire localhost:3000 with Portless from Vercel

A LinkedIn post by Alexandre Zajac.

I’m excited to announce that you can officially retire localhost:3000. Simply by using Portless from Vercel.

It’s pure magic; your app gets a name instead of a port.

portless your-app next dev → http://your-app.localhost

What comes for free with it:

• No more memorizing ports
• Makes git worktree parallel dev easier
• Friendly hostnames per app instead of localhost:xxxx

Discussion

• Animesh Agarwal: Under the hood it feels similar to Traefik / Nginx / Caddy — routing friendly hostnames to local services. The difference is zero-config setup, automatic TLS, and a developer-friendly workflow.
• Saul Slavin: “Couldn’t you just modify the hosts file to name various localhost ports?”
• Leonardo Freire: Asked what the major benefits are over ngrok.
• Daniel Ebert: Interesting side effect — app names create a stable language for debugging; teams reference environments by intent instead of transient ports.