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sish vs zrok: catalog facts
sish	zrok
Free Free and open source under the MIT licence.	Freemium Open source for self-hosting; NetFoundry also runs it as a hosted service.
Linux, Self-hosted, Command line	Self-hosted, Command line
Works with the standard SSH client, no extra software HTTP, WebSocket and TCP tunnels plus SNI routing	Private sharing without exposing a public endpoint Shares files and web content as well as HTTP services
Needs a public server and domain to self-host Configuring DNS and certificates takes some effort	Requires an invite and enabling an environment before sharing Self-hosting involves running OpenZiti infrastructure
Downloadable app, Self-hosted	Downloadable app, Self-hosted, Hosted service
Open source	Open source
License: MIT	License not stated
Not stated if an account is needed	Account 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.