Expose localhost to
the internet. Instantly.
The self-hosted ngrok alternative. Secure tunnels, custom domains, and a real-time dashboard — all on your own infrastructure.
SubTunnel v1.0.0
Status: online
Forwarding: https://my-app.subtunnel.dev → localhost:3000
Dashboard: http://localhost:4040
Everything you need to tunnel
Production-grade tunneling with the features your team actually needs.
Self-Hosted
Run on your own infrastructure. Full control over your data and traffic. No third-party dependencies.
Custom Domains
Use your own domain names for tunnels. Professional URLs for demos, webhooks, and development.
End-to-End Encryption
All traffic encrypted in transit. TLS termination at the edge with automatic certificate management.
Real-time Dashboard
Monitor active tunnels, inspect requests, and replay traffic. Built-in request inspector.
Team Support
Multi-user support with role-based access control. Share tunnels across your team securely.
Open Source
Fully open source under MIT. Contribute, fork, extend. No vendor lock-in, ever.
One command.
That's it.
No config files, no complex setup. Install the CLI, run one command, and your local server is live on the internet.
SubTunnel vs ngrok
Self-hosted, open source, no vendor lock-in.
Install in seconds
One command. No dependencies. Works on macOS and Linux.
macOS
Apple Silicon & Intel
curl -sSL … | shLinux
x86_64 & ARM64
curl -sSL … | shReady to tunnel?
Get started in under 60 seconds. No credit card required. Self-host or use our managed service.