How to replace localhost port numbers with custom domain names for local development

How to replace localhost port numbers with custom domain names for local development

This task can be performed using Portless

Stop juggling ports. Use human-readable local URLs instead.

Best product for this task

Portle

Portless maps local development servers to stable, named HTTPS URLs like myapp.localhost instead of numeric ports. It automates TLS, port assignment, and host configuration, supports subdomains and Git worktrees, and simplifies multi-service, multi-branch development environments.

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What to expect from an ideal product

  1. Maps your local development servers to readable domain names like myapp.localhost instead of remembering which service runs on port 3000 or 8080
  2. Automatically handles HTTPS certificates and port management so you don't have to manually configure SSL for each local project
  3. Creates stable URLs that stay the same across development sessions, eliminating the need to update bookmarks and API endpoints when ports change
  4. Supports subdomains and multiple Git branches, letting you run feature-branch.myapp.localhost alongside main-branch.myapp.localhost without port conflicts
  5. Simplifies team collaboration by giving everyone the same predictable local URLs instead of sharing different port numbers across machines

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