# progrium/localtunnel

Expose localhost servers to the Internet

Repository: https://github.com/progrium/localtunnel
Canonical: https://ross.abutalabs.com/products/progrium-localtunnel
Language: Go
License: MIT
License Family: permissive
Last push: 2022-05-17T07:58:46+00:00

## Health v2 (maintenance only)
Score: 32/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 6066, "days_push": 1569, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 3227, forks 244 (observed 2026-08-28T04:07:50.032255+00:00)

## What it is
Localtunnel is a tool that exposes localhost servers to the public Internet via tunnels. The current v3 is a minimal Go implementation built on the Duplex project, while the repo also archives the historical v1 and v2 versions.

## Use cases
- expose my localhost server to the internet
- share a local dev server with a teammate via a public URL
- test webhooks against a locally running app
- demo a local web app without deploying it
- self-host a tunnel service for localhost

## When to choose
- you want a minimal, self-hostable localhost tunnel you can run yourself
- you want to study or fork a simple tunnel implementation in Go
- you need the historical v1/v2 localtunnel implementations

## When to avoid
- you need a hosted tunnel service with a public server and stable URLs - use ngrok or similar
- you need production-grade features like auth, custom domains, or binary releases
- you expect active development or support

## Facets
- artifact type: cli-tool
- maturity: maintenance
- function: http-server, proxy, networking
- domain: web-development, developer-tools, networking
- platform: windows, cross-platform, cli
- tags: localhost-tunnel, tunneling, go, ngrok-alternative, self-hosted, linux, macos

## Member repositories
- progrium/localtunnel (main) score 32

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:07:50.032255+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T18:44:10.194873+00:00, confidence not recorded.
  - readme: https://github.com/progrium/localtunnel (fetched 2026-08-28T04:07:50.032255+00:00, sha 981122d42579)
- Data as of 2026-08-30T08:39:29.467469+00:00.