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Tailscale

Category: AI Developer Tools

A zero-config VPN solution that creates secure, private mesh networks connecting computers, servers, and cloud instances – built on WireGuard technology. Tailscale was founded in 2019. The company is led by Avery Pennarun. Based in Toronto, Canada. Team size: 70. Total funding raised: ~$275M total (all rounds). Latest round: Series C ($160M, Apr 2025 led by Accel). Key investors include Accel, CRV, Insight Partners, Heavybit, Uncork Capital.

Founded
2019
Headquarters
Toronto, Canada
Team size
70
Total funding
~$275M total (all rounds)

Value proposition

Delivers simple, secure, zero-trust networking with seamless integration to existing identity providers, eliminating the need for complex firewall setups.

Products and solutions

Tailscale VPN (Mesh VPN), Tailscale SSH, MagicDNS, Tailscale Funnel, Exit Nodes, Access Controls (ACLs), Kubernetes Operator, Configuration Audit Logging, Tailnet Lock, Docker Desktop Extension

Unique value

Emphasis on extreme ease-of-use with zero-configuration setup, leveraging a peer-to-peer WireGuard mesh network and an identity-centric access model.

Target customer

Developers, IT teams, SMBs to Enterprises, and individuals seeking secure remote access and simplified networking.

Industries served

Technology, Software Development, IT Services, Finance, Healthcare, Education, General Business, Individual/Homelab users

Technology advantage

Combines the high performance and security of WireGuard with a user-friendly interface, seamless identity provider integration, a strong open-source community, and a product-led growth approach.

How they differentiate

Focuses on simplicity, excellent developer experience, and a robust free tier combined with pure peer-to-peer WireGuard-based networking.

Main competitors

Zscaler Private Access, Palo Alto Networks (Prisma Access), Cloudflare Access, ZeroTier, Netmaker, OpenVPN Cloud

Key partnerships

Identity Providers (Okta, Google Workspace, Microsoft Entra ID, GitHub, etc.), Cloud Providers (AWS, Azure, GCP), Technology partners (e.g., Docker, Kubernetes ecosystem)

Notable customers

Instacart, Machinify, Corelight, Mercari, Bolt, Oxide Computer Company

Major milestones

Founded (2019) Raised Seed Round ($3M, Apr 2020) Raised Series A ($12M, Nov 2020) Raised Series B ($100M, May 2022)

Growth metrics

As of Jan 2023, hundreds of thousands of monthly active users; earlier milestones include significant growth in business customer adoption.

Market positioning

Well-positioned as a strong contender in the modern VPN and Zero Trust Network Access (ZTNA) domain, particularly favored by developers, tech-savvy users, and SMBs.

Geographic focus

Global, with particularly strong adoption in North America and other major tech hubs worldwide.

Patents and IP

No specific patents disclosed; relies on open-source innovations like WireGuard.

About Avery Pennarun

Avery Pennarun is a seasoned entrepreneur and engineer with a deep background in networking and software development. He co-founded Tailscale, a zero-config VPN solution, and serves as its CEO. Before Tailscale, he consulted for Alphabet's senior leadership and led the gigabit WiFi and platform analytics team at Google Fiber. His career began with an early passion for networking, building a Linux driver as a teenager and starting a company in college to help small businesses share dial-up connections. His philosophy emphasizes simplicity in product design and a bottom-up growth strategy, focusing on developers and small teams.

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