# HyNetworks/hysteria

Hysteria is powerful, lightning-fast, and censorship-resistant open-source proxy software

Repository: https://github.com/HyNetworks/hysteria
Canonical: https://ross.abutalabs.com/products/hysteria
Homepage: https://hysteria.network/
Language: Go
License: MIT
License Family: permissive
Topics: golang, proxy, reliable-udp, quic, censorship-circumvention, http-proxy, socks5, relay, hysteria, vpn, tun
Last push: 2026-08-23T00:38:11+00:00

## Health v2 (maintenance only)
Score: 99/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 99, longevity 100
- inputs: {"age_days": 2326, "days_push": 11, "days_rel": 11, "gap_med": 20.5, "n_releases_24m": 21}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 22383, forks 2244 (observed 2026-08-28T04:11:32.575032+00:00)

## What it is
Hysteria is a fast, censorship-resistant proxy built on a customized QUIC protocol that masquerades as standard HTTP/3 traffic. It supports SOCKS5, HTTP proxy, TCP/UDP forwarding, TProxy, and TUN modes, plus a peer-to-peer NAT traversal mode (Realms) for hosting without a public IP.

## Use cases
- bypass internet censorship and firewalls
- proxy traffic over lossy or high-latency networks
- set up a self-hosted proxy server on a VPS
- host a proxy server from home behind NAT without port forwarding
- provide a SOCKS5 or HTTP proxy for local apps
- tunnel traffic through networks that block or throttle UDP
- disguise proxy traffic as normal HTTPS/HTTP/3

## When to choose
- you need fast proxying on unreliable, lossy, or high-latency connections
- you need censorship resistance with traffic that looks like standard HTTP/3
- you want to self-host a proxy without a public IP using UDP hole punching
- you need cross-platform builds including routers, ARM devices, and Android
- you want built-in auth, traffic stats, and access control for multi-user setups

## When to avoid
- you need a full managed VPN solution with official infrastructure - Hysteria is software only, you run your own server
- your network blocks UDP entirely and you cannot use the Linux-only mimic TCP mode
- you need a GUI-first consumer VPN app rather than a config-file-driven tool
- you only need simple site-to-site VPN tunneling rather than proxying

## Facets
- artifact type: application
- maturity: active
- function: proxy, vpn, networking, cryptography, http-server, cli
- domain: censorship-circumvention, privacy, networking, security, self-hosted
- platform: windows, bsd, cli, cross-platform, go
- tags: quic, socks5, http-proxy, tun, nat-traversal, udp-hole-punching, anti-censorship, http3, gfw-bypass, linux, macos, android

## Member repositories
- HyNetworks/hysteria (main) score 99

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:11:32.575032+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 2026-08-29T16:57:20.443679+00:00, confidence not recorded.
  - readme: https://github.com/HyNetworks/hysteria (fetched 2026-08-28T04:11:32.575032+00:00, sha cf4f2e0f2676)
  - homepage: https://hysteria.network/ (fetched 2026-08-29T07:55:43.192314+00:00, sha 5ece6b18e748)
  - site_page: https://hysteria.network/docs/advanced/Realms (fetched 2026-08-29T07:55:43.201485+00:00, sha 3ed30be2a7eb)
  - site_page: https://hysteria.network/docs/getting-started/Installation (fetched 2026-08-29T07:55:43.204239+00:00, sha 4a0fd9da2ac2)
  - site_page: https://hysteria.network/docs/Changelog (fetched 2026-08-29T07:55:43.206110+00:00, sha ee2b72765d6d)
  - site_page: https://hysteria.network/docs/Artworks (fetched 2026-08-29T07:55:43.208177+00:00, sha fe2faf574dd2)
  - site_page: https://hysteria.network/docs/Donation (fetched 2026-08-29T07:55:43.210210+00:00, sha 0b21d04fc65c)
  - site_page: https://hysteria.network/docs/getting-started/Server-Installation-Script (fetched 2026-08-29T07:55:43.212309+00:00, sha da15c2201c2f)
  - site_page: https://hysteria.network/docs/getting-started/Server (fetched 2026-08-29T07:55:43.214728+00:00, sha 2483c8e1a0ce)
  - site_page: https://hysteria.network/docs/getting-started/Client (fetched 2026-08-29T07:55:43.216942+00:00, sha ac489ab5a79c)
- Data as of 2026-08-30T08:39:29.467469+00:00.