Underpass

Self-hosted ngrok alternative.

Installation (CLI)

brew install cjdenio/tap/underpass

Or, download a release from the releases page.

Usage with hosted server

There's a hosted instance running at https://underpass.clb.li.

underpass -p <port> -s <optional subdomain>

Self-hosting

(more docs coming soon, possibly)

go run ./cmd/server --host <host here>

underpass -p <port> --host <host here> -s <optional subdomain>

Known caveats

• No WebSocket support