Underpass
Product

Everything a private network needs.
Nothing it doesn't.

A small app on each device and one dashboard for everything else. Every feature is on every plan, Free included.

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Features
01Direct connectionsDevices talk straight to each other
  • Through routers and firewalls
  • Encrypted relay as a backup
  • No ports to open
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02Easy namesReach every device by name
  • db-prod instead of 100.64.0.21
  • Use your own DNS too
  • HTTPS for machine names
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03Always availableAnother machine takes over
  • One name for an internal app
  • Runs on two or more machines
  • Moves over on its own
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04One addressOne address for allow-lists
  • One address on allow-lists
  • Only that service's traffic
  • Wildcard domains
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05Bring your teamInvite people, approve who joins
  • Invite by email or link
  • Approve who joins
  • Owner, admin and member roles
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06Access controlsChoose who reaches what
  • Rules by group, tag or service
  • Tests before you save
  • Enforced on every device
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Every plan

Every feature, on every plan.

Plans only differ in how many people and devices they cover, and how fast we answer. Free covers 3 people and 25 devices.

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Use cases
Remote teamInternal tools for everyone, anywhereServers & cloudEvery server on one networkAlways-on appsKeep internal apps runningOutside servicesOne address for allow-lists

/ Independent · bootstrapped · no investors

Built by a person,
not a fund.

I'm Endi, and I build Underpass myself. No investors to answer to, only the people who run their networks on it. Every message that comes in reaches me directly.

Get started freeWrite to me