# trojan-gfw/trojan

An unidentifiable mechanism that helps you bypass GFW.

Repository: https://github.com/trojan-gfw/trojan
Canonical: https://ross.abutalabs.com/products/trojan
Homepage: https://trojan-gfw.github.io/trojan/
Language: C++
License: GPL-3.0
License Family: copyleft
Topics: china, censorship-circumvention, anticensorship, gfw, antisurveillance, bypass-gfw, trojan
Last push: 2024-08-21T09:27:36+00:00

## Health v2 (maintenance only)
Score: 23/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 3238, "days_push": 742, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 19748, forks 3022 (observed 2026-08-28T04:11:29.147600+00:00)

## What it is
Trojan is a C++ proxy server/client that disguises traffic as ordinary HTTPS over TLS to bypass the Great Firewall of China. It implements the trojan protocol, imitating common web services to avoid active and passive censorship detection.

## Use cases
- bypass the great firewall of china
- circumvent internet censorship
- proxy traffic disguised as https
- avoid isp qos throttling
- set up an anti-censorship proxy server
- tunnel traffic over tls to evade detection

## When to choose
- you need censorship circumvention that resists active probing and traffic fingerprinting
- you want a lightweight TLS-based proxy that looks like normal HTTPS traffic
- you are in a network with ISP QoS throttling of VPN protocols

## When to avoid
- you need a general-purpose VPN with full system-wide tunneling
- you want a actively developed project with frequent updates
- you need user-friendly GUI configuration rather than config files

## Facets
- artifact type: application
- maturity: maintenance
- function: proxy, vpn, networking, security, privacy
- domain: censorship-circumvention, privacy, networking, security
- platform: windows, cross-platform, cli
- tags: gfw, anticensorship, tls, proxy-protocol, antisurveillance, linux, macos

## Member repositories
- trojan-gfw/trojan (main) score 23

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:11:29.147600+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 2026-08-29T16:59:52.111453+00:00, confidence not recorded.
  - readme: https://github.com/trojan-gfw/trojan (fetched 2026-08-28T04:11:29.147600+00:00, sha 99f58f5fcaad)
  - homepage: https://trojan-gfw.github.io/trojan/ (fetched 2026-08-29T07:58:07.582542+00:00, sha fd7cdaef2cfb)
- Data as of 2026-08-30T08:39:29.467469+00:00.