Best Open Source Alternatives to Perimeter 81

Compare the best free and open-source alternatives to Perimeter 81 — self-hosted and desktop replacements you fully control, ranked by GitHub stars, license and platform support.

Curated by open-source.store · Updated November 2026 · 3 alternatives

Perimeter 81

Proprietary SaaS

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Platformsmacos, windows, linux, ios, android, web

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Perimeter 81 alternatives compared

Open-source alternatives to Perimeter 81, compared by stars, license and platform
Tool		License	Platforms	Self-hosted
Headscale	45,329	BSD-3-Clause	LinuxDocker	Yes	Nov 2026	Visit
OpenVPN	14,762	GPL-3.0	LinuxWindowsmacOSDocker	Yes	Nov 2026	Visit
Firezone	9,163	Apache-2.0	LinuxDocker	Yes	Nov 2026	Visit

Top open-source Perimeter 81 alternatives

Headscale45,329BSD-3-Clause

Headscale is a self-hosted control server for Tailscale clients that provides private WireGuard mesh networking without external coordination clouds.

LinuxDocker

vs Perimeter 81: a free, open-source option you fully control, licensed BSD-3-Clause.

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OpenVPN14,762GPL-3.0

OpenVPN is a self-hosted tunneling daemon that links remote developers to private subnets with custom PKI, scriptable routing, and LDAP authentication.

LinuxWindowsmacOSDocker

vs Perimeter 81: a free, open-source option you fully control, licensed GPL-3.0.

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Firezone9,163Apache-2.0

Firezone replaces corporate VPNs and Perimeter 81 with open-source zero-trust network access, routing WireGuard traffic directly to private gateways.

LinuxDocker

vs Perimeter 81: a free, open-source option you fully control, licensed Apache-2.0.

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Best Open Source Alternatives to Perimeter 81

Perimeter 81

Perimeter 81 alternatives compared

Top open-source Perimeter 81 alternatives

The modern standard for Protobuf workflows

Mentoring for backend developers. Consulting for startups.