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List of ngrok alternatives and other ngrok-like tunneling software and services. Focus on self-hosting.

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The purpose of this list is to track and compare tunneling solutions. This is primarily targeted toward self-hosters and developers who want to do things like exposing a local webserver via a public domain name, with automatic HTTPS, even if behind a NAT or other restricted network.

The dream

I started this list because I'm looking for a simple tool/service that does the following:

  • Allows me to register a domain name and automatically points the records at the server running the tunnels.
  • Automatically sets up and manages HTTPS certificates (apex and subdomains) for the domain.
  • Provides a client tool that tunnels HTTP/TCP connections through the server without requiring root on the client.
  • Provides a simple GUI interface to allow me to map X domain/subdomain to Y port on Z client, and proxy all connections to that domain.

So far I haven't found a tool that does all of this. In particular, while some of them can do automatic certs through Lets's Encrypt, none of them integrate the domain registration and DNS management.

UPDATE: Since starting this list I found most of the other solutions to be either too complicated or making different tradeoffs than I would want. I have two of my own projects in this space:

  1. SirTunnel is I believe the minimal way of getting auto-HTTPS tunneled through to a private network. It's just a 50-line Python script that leverages Caddy and OpenSSH, but you need to understand how it works to use it. This one is good for developers.

  2. boringproxy is my take on a comprehensive tunnel proxy solution. It's in beta but currently solves almost everything I want except auto DNS management, and that's planned. Once the server is running this is a very easy tool to use, and is targeted at non-developers.

Open source (at least with a reasonably permissive license)

  • frp frp github stars badge - Seems to be a pretty comprehensive open alternative to ngrok.
  • ngrok 1.0 ngrok 1.0 github stars badge - Original version of ngrok. No longer developed in favor of the commercial 2.0 version.
  • localtunnel localtunnel github stars badge - Written in node. Popular suggestion.
  • inlets inlets github stars badge - Open source ngrok alternative. Has pro option.
  • sshuttle sshuttle github stars badge - Open source project originally from one of the founders of Tailscale. Server doesn't require root; client does. Explicitly designed to avoid TCP-over-TCP issues.
  • ZeroTier - zerotier github stars badge Layer 2 overlay network.
  • chisel chisel github stars badge - SSH under the hood, but still uses a custom client binary. Supports auto certs from LetsEncrypt.
  • expose expose github stars badge - ngrok alternative written in PHP.
  • Pritunl pritunl github stars badge - Seems quite comprehensive and complicated. OpenVPN, WireGuard, and IPSec support.
  • teleconsole teleconsole github stars badge - SSH-based, but uses special client script. Focused on forwarding SSH console sessions, but can also forward ports.
  • go-http-tunnel go-http-tunnel github stars badge - Uses a single HTTP/2 connection for muxing. Need to manually generate certs for server and clients.
  • sish sish github stars badge - Open source ngrok/serveo alternative. SSH-based but uses a custom server written in Go. Supports WebSocket tunneling.
  • tunnelto tunnelto github stars badge - Open core (MIT). Written in Rust.
  • wstunnel wstunnel github stars badge - Proxies over WebSockets. Focus on proxying from behind networks that block certain protocols. Written in Haskell with executables provided.
  • PageKite pagekite github stars badge - Comprehensive open source solution with hosted options.
  • Crowbar crowbar github stars badge - Tunnels TCP connections over HTTP GET and POST requests.
  • tunneller tunneller github stars badge - Open source. Written in Go.
  • jprq jprq github stars badge - Proxies over WebSockets. Written in Python.
  • docker-tunnel docker-tunnel github stars badge - Simple Docker-based nginx+SSH solution.
  • boringproxy boringproxy github stars badge - 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.
  • remotemoe remotemoe github stars badge - SSH-based, with custom golang server. Does some cool unique things. Instead of just plain tunnels, it drops you into a basic CLI UI that offers several useful commands interactively, such as adding a custom hostname. Also allows end-to-end encryption for both HTTPS and upstream SSH. Doesn't appear to offer non-e2e HTTPS, ie no auto Let's Encrypt support.
  • holepunch.io holepunch github stars badge - Has nice hosted solution. Uses SSH for muxing.
  • SirTunnel SirTunnel github stars badge - Minimal, self-hosted, 0-config alternative to ngrok. Similar to sish but leverages Caddy+OpenSSH rather than custom server code.
  • StaqLab Tunnel staqlab github stars badge - SSH-based. Client is open source. Server doesn't appear to be.
  • tnnlink tnnlink github stars badge - SSH-based. Golang. Not maintained.
  • Telebit - Written in JS. Code.

Commercial/Closed source

  • ngrok 2.0 - Probably the gold standard and most popular. Closed source. Lots of features, including TLS and TCP tunnels. Doesn't require root to run client.
  • Tailscale tailscale github stars badge - Built on WireGuard. Easy to use. Doesn't include an HTTPS proxy on the public side, but could be combined with nginx/Caddy/etc. Some code available, but I'm not sure what the implications of the custom license is.
  • Loophole - Offers end-to-end TLS encryption with the client automatically getting certs from Let's Encrypt. QR codes for URL sharing.
  • CloudFlare Argo Tunnel - $5/mo + $0.1/GB. Integrates with Argo smart routing. Client source code is available.
  • localhost.run - Simple hosted SSH option. Supports custom domains for a cost.
  • Packetriot - Comprehensive alternative to ngrok. HTTP Inspector, Let's Encrypt integration, doesn't require root and Linux repos for apt, yum and dnf. Enterprise licenses and self-hosted option.
  • Lynk - Advertises itself as a cheaper, faster, self-hostable (but not open source) alternative to ngrok. Blog post.
  • Hoppy - WireGuard-based. Provides static IPv4 and IPv6 addresses for your machines, which is a simple and useful level of abstraction. Targeted towards self-hosters and people behind NATs.
  • gw.run - Specifically focusing on securely exposing internal web apps to a group of people; not for publicly facing apps. Share access via email address then allow users to log in with common login providers like Google.
  • serveo - Mentioned quite a bit the last couple years, but appears to be down currently. Simply uses SSH for tunneling.

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