diff --git a/README.md b/README.md
index 0f2e1d6..d60f2d1 100644
--- a/README.md
+++ b/README.md
@@ -58,6 +58,7 @@ easy tool to use, and is targeted at non-developers.
 * [rathole](https://github.com/rapiz1/rathole) [![rathole github stars badge](https://img.shields.io/github/stars/rapiz1/rathole?style=flat)](https://github.com/rapiz1/rathole/stargazers) - Similar to frp, including the config format, but with improved performance. Low resource consumption. Hot reload. Written in Rust.
 * [jprq](https://github.com/azimjohn/jprq) [![jprq github stars badge](https://img.shields.io/github/stars/azimjohn/jprq?style=flat)](https://github.com/azimjohn/jprq/stargazers) - Proxies over WebSockets. Written in Python.
 * [boringproxy](https://boringproxy.io/) [![boringproxy github stars badge](https://img.shields.io/github/stars/boringproxy/boringproxy?style=flat)](https://github.com/boringproxy/boringproxy/stargazers) - Designed to be very easy to use. No config files. Clients can be remote-controlled through a simple WebUI and/or REST API on the server.
+* [tunnel](https://github.com/koding/tunnel) [![tunnel github stars badge](https://img.shields.io/github/stars/koding/tunnel?style=flat)](https://github.com/koding/tunnel/stargazers) - This one is a Golang library, not a program you can just run. However, it looks easy to use. Uses a single TCP socket, and [yamux](https://github.com/hashicorp/yamux) for multiplexing.
 * [pgrok](https://www.proxy.jetzt/) [![pgrok github stars badge](https://img.shields.io/github/stars/jerson/pgrok?style=flat)](https://github.com/jerson/pgrok/stargazers) - Fork of ngrok 1.0, with more recent commits.
 * [docker-tunnel](https://github.com/vitobotta/docker-tunnel) [![docker-tunnel github stars badge](https://img.shields.io/github/stars/vitobotta/docker-tunnel?style=flat)](https://github.com/vitobotta/docker-tunnel/stargazers) - Simple Docker-based nginx+SSH solution.
 * [SirTunnel](https://github.com/anderspitman/SirTunnel) [![SirTunnel github stars badge](https://img.shields.io/github/stars/anderspitman/SirTunnel?style=flat)](https://github.com/anderspitman/SirTunnel/stargazers) - Minimal, self-hosted, 0-config alternative to ngrok. Similar to sish but leverages Caddy+OpenSSH rather than custom server code.