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sish vs ngrok: catalog facts
sish	ngrok
Free Free and open source under the MIT licence.	Freemium Free to start, with paid plans for more features.
Linux, Self-hosted, Command line	Windows, macOS, Command line
Works with the standard SSH client, no extra software HTTP, WebSocket and TCP tunnels plus SNI routing	Public URL for a local app in one command Useful for receiving webhooks during development
Needs a public server and domain to self-host Configuring DNS and certificates takes some effort	Traffic is routed through ngrok's service Product has grown into a broad commercial platform beyond simple tunnels
Downloadable app, Self-hosted	Downloadable app, Hosted service
Open source	Closed source
License: MIT	License not stated
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Needs internet
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked September 23, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.