|Privately held company|
|Headquarters||Toronto, Canada, |
Tailscale Inc. is a software company with a freemium business model based in Toronto, Canada. Tailscale provides an open-source Software-defined networking mesh virtual private network (VPN) software and a web-based management service. The company provides a Zero-configuration networking|zero config mesh VPN service under the same name. 
In November 2020 the company secured funding of $12 million in a Series A round. The investment is lead by Accel (company)|Accel with Heavybit's and Uncork Capital's participation.
1.4.0 / January 28, 2021
|Operating system||Microsoft Windows, macOS, Linux, iOS|
|Type||Software-defined networking, Peer-to-peer, Virtual private network|
The open-source software acts in combination with the management service to esablish peer-to-peer or relayed VPN comunication with other clients using the Wireguard protocol. If the software fails to establish direct communication it falls back to using relays provided by the company. The IPv4 addresses given to clients are in the Carrier-grade NAT reserved space. This was chosen to avoid interference with existing networks. The configuration also allows routing of traffic to networks behind the client on some clients.
- Hanselman, Scott. "Using Tailscale on Windows to network more easily with WSL2 and Visual Studio Code". www.hanselman.com. Retrieved 2021-02-01.
- Dillet, Romain. "Tailscale raises $12 million for its WireGuard-based corporate VPN". TechCrunch. Retrieved 2021-02-01.
- "Tailscale releases"
- Morgan, Ethel. "Tailscale". ethulhu.co.uk. Retrieved 2021-02-01.