Tailscale ships Tailcat, its data plane without accounts or admins

Brad Fitzpatrick built the open-source tool on a 10-hour flight in 2023; customer demand and AI agents brought it back to life.

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Primary source: Tailscale

Why it matters

Tailcat makes Tailscale's commercial boundary explicit: the encrypted networking layer can be free and self-hosted, while identity, policy, reliable relays and administration remain the products businesses pay for.

Tailscale ships Tailcat, its data plane without accounts or admins — Brad Fitzpatrick built the open-source tool on a 10-hour flight in 2023; customer demand and AI agents brought it back to life.

Tailscale released Tailcat on August 31st, giving developers its WireGuard-based data plane without the accounts, identity controls or persistent network that make up Tailscale's commercial service.…

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