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gTunnel

Robust TCP tunneling solution over gRPC

Remote Access & VPN ★ 273 stars Medium setup GPL-3.0

gTunnel is a self-hosted TCP tunneling tool built on gRPC that can forward and reverse-forward ports between a server and connected clients through firewalls. It is run as a server and client pair.

Official siteSource code

Key features

  • gRPC-based tunneling
  • Forward and reverse ports
  • Firewall traversal
  • Server-client model

Strengths

  • Released under the GPL-3.0 license
  • First-class Docker support for quick deployment
  • Written in Go
  • Tiny footprint — runs in 64 MB RAM

Is gTunnel secure?

OSV.dev has no published security advisories for gTunnel's repository. No known vulnerabilities is not proof of security: it means none have been publicly catalogued.

Source: OSV.dev, checked 2026-10-14. How this is measured.

gTunnel replaces

Self-hosted ngrok alternatives

Health badge

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SelfHostIndex: 8 · at risk

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   :alt: SelfHostIndex health score for gTunnel
   :target: https://selfhostindex.com/app/gtunnel/

The score is recomputed on every nightly rebuild from public repository data — see how it is calculated.

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