localtunnel makes it simple to share your local development environment with others without configuring DNS or deploying to production. Just run a single command and get a public URL that tunnels directly to your localhost.

This is especially useful when working with external services that require public URLs for callbacks, such as Twilio webhooks, payment processors, or browser testing platforms. You can restart your local server anytime, and localtunnel automatically reconnects when it comes back online.

Key capabilities:

Instant public URL generation with a single command
Optional custom subdomains for memorable URLs
Support for HTTPS and local certificate configurations
Works with any local port and hostname
Available as CLI tool or Node.js API for programmatic use
Automatic reconnection on server restart
Real-time request monitoring through event listeners

The tool supports multiple installation methods including npm, Homebrew, and global installation, making it accessible whether you're working on a single project or across multiple environments. The API also enables integration into test suites and automation workflows for continuous testing scenarios.

Npm