Hysteria is a powerful, lightning-fast, and censorship-resistant proxy.

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Hysteria 1.x (legacy)

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🛠️ Jack of all trades

Wide range of modes including SOCKS5, HTTP Proxy, TCP/UDP Forwarding, Linux TProxy, TUN - with more features being added constantly.

⚡ Blazing fast

Powered by a customized QUIC protocol, Hysteria is designed to deliver unparalleled performance over unreliable and lossy networks.

✊ Censorship resistant

The protocol masquerades as standard HTTP/3 traffic, making it very difficult for censors to detect and block without widespread collateral damage.

💻 Cross-platform

We have builds for every major platform and architecture. Deploy anywhere & use everywhere. Not to mention the long list of 3rd party apps.

🔗 Easy integration

With built-in support for custom authentication, traffic statistics & access control, Hysteria is easy to integrate into your infrastructure.

🤗 Chill and supportive

We have well-documented specifications and code for developers to contribute and/or build their own apps. And a helpful community, too.

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Fork changes vs upstream (apernet/hysteria)

This fork adds the following features on top of the original Hysteria 2:

• L3 VPN Tunnel — full IP tunnel over QUIC with TUN interface and IP pool
• FileMask Noise — obfuscation layer that masks traffic as encrypted file downloads (AES-GCM)
• Hysteria Outbound — chain multiple Hysteria servers (use one as upstream outbound)
• TLS 1.3 Mimic Obfuscation — wraps QUIC packets in TLS 1.3 record headers to bypass DPI
• Multi-mode Obfuscation — auto-detects Salamander / TLS-mimic / plain clients on the same port
• Random Padding & Jitter — obfuscation options to break constant-packet-size and constant-bitrate DPI patterns
• Session Recreation — periodic client reconnection (MaxSessionDuration) to avoid long-lived session detection
• Plain client support — stock Hysteria 2 clients connect without obfuscation on the same port

If you find Hysteria useful, consider giving it a ⭐️!