In today's article, we are going to explore the topic of Tailscale in depth. From its origins to its relevance today, we will dive into every key aspect related to Tailscale. We will analyze its impact on society, culture and the economy, as well as its role in the lives of people in different parts of the world. Through this detailed exploration, we hope to shed light on the lesser-known aspects of Tailscale and provide a comprehensive view of its importance in today's world.
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Company type | Private |
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Industry | |
Founded | 2019 |
Founder | Avery Pennarun David Carney Brad Fitzpatrick ![]() |
Headquarters | Toronto, Ontario |
Key people |
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Website | tailscale |
Tailscale Inc. is a software company based in Toronto, Ontario. Tailscale develops a partially open-source software-defined mesh virtual private network (VPN) and a web-based management service.[a][2][3] The company provides a zero config VPN as a service under the same name.[4][better source needed]
Developer(s) | Tailscale Inc. |
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Stable release | 1.82.5[5]
/ April 17, 2025 |
Operating system | Microsoft Windows, macOS, Linux, Android, iOS, tvOS, Plan9 |
Type | SD-WAN, P2P, VPN, ZTNA |
License | BSD |
Website | tailscale |
Founded in 2019 by Google engineers Avery Pennarun, David Crawshaw, David Carney, and Brad Fitzpatrick,[6] the company secured funding of $12 million in a Series A round in November 2020 led by Accel with seed investors Heavybit and Uncork Capital participating.[7] In May 2022, the company secured a $100 million Series B round, led by CRV and Insight Partners, with participation from existing investors.[6][8]
The company's name is inspired from a research paper The Tail at Scale[b] published by Google.[9]
The open-source software acts in combination with the management service to establish peer-to-peer or relayed VPN communication with other clients using the WireGuard protocol.[10][11] Tailscale can open direct connection to the peer using NAT traversal techniques such as STUN or request port forwarding via UPnP IGD, NAT-PMP or PCP.[12] If the software fails to establish direct communication it falls back to using DERP (Designated Encrypted Relay for Packets) protocol relays provided by the company.[13] The IPv4 addresses given to clients are in the carrier-grade NAT reserved space. This was chosen to avoid interference with existing networks.[14] The Linux client can also send traffic to networks behind itself by disabling SNAT and routing directly to the source IPs. [15]
The Tailscale client software supports a number of operating systems and embedded software systems,[16] including:
A Kubernetes operator[19] and Docker images[20] are also available.
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