Skip to content


Subversion checkout URL

You can clone with HTTPS or Subversion.

Download ZIP
Expose localhost servers to the Internet
branch: master


latest commit 5b6c1a6c73
Jeff Lindsay authored


What happened to localtunnel? After pioneering instant public tunnels to localhost, many people copied the project and started businesses around the idea. Localtunnel fell into obscurity. Today, Alan Shreve's Ngrok rightly dominates mindshare on the idea.

This repo now contains localtunnel v3, a very minimal implementation (under 200 lines) written in Go using my new project Duplex. Duplex lets you make stuff like localtunnel very easily. Although usable, there is no public server and the scope of the project is pretty fixed where it is.

This repo also continues to exist to archive the history of the project. You'll find several interesting branches here:

  • v2 (2011-2013) - Attempt to revitalize the project and service, v2 was written end-to-end in Python gevent and resolved many issues and requests from v1.
  • v1 (mid 2010) - The original implementation that became popular. It worked quite well, but was a dirty hack. It wrapped OpenSSH, with a client in Ruby and a control server in Python Twisted.
  • prototype (early 2010) - When I first had the idea, I tried using Python Twisted to implement the whole system. I didn't have the experience to get stream multiplexing to work, so this version is pretty broken.

Using localtunnel v3

Binary releases have not been set up yet, so you'll need Go to get started:

$ go install



Something went wrong with that request. Please try again.