
TailScale
Twingate
NetBird
Defined.ai
Betterspot VPN Router
GoodAccess
Netmaker
PQC-native, software-defined networking with CNSA 2.0–aligned cryptography, self-hosted or air-gapped deployment, and no vendor key custody.

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Website, pricing, platforms and company facts side by side.
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| Website | zerotier.com | diffee.me |
| Company | Startup from the United States · 20 - 49 employees · 2026 | — |
| Listed in |
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