Portless replaces numeric localhost ports with stable subdomains

// 1h agoOPENSOURCE RELEASE

Portless replaces numeric localhost ports with stable subdomains

Portless is an open-source CLI tool by Vercel Labs that eliminates manual port management by routing local projects to persistent .localhost subdomains. Operating as a zero-config local reverse proxy, it resolves EADDRINUSE collisions, preserves session state across restarts, and provides automatic HTTPS support.

// ANALYSIS

Portless eliminates one of the most persistent minor annoyances in web development—manual port management—making local multi-service development virtually effortless.

–Resolves annoying `EADDRINUSE` port collision errors when running multiple local projects or microservices concurrently.
–Provides consistent, human-readable `.localhost` subdomains that simplify bookmarking, cookie management, and multi-tenant testing.
–Integrates cleanly with modern developer setups such as Git worktrees and AI coding agents that benefit from stable local URLs.
–Includes automatic HTTPS support with generated local certificates without requiring manual `/etc/hosts` edits or proxy setups.

// TAGS

portlessdevtoolclivercelweb-developmentlocal-developmentproxyopen-source

DISCOVERED

1h ago

2026-07-22

PUBLISHED

2h ago

2026-07-22

RELEVANCE

7/ 10

AUTHOR

Syntax

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