Implementations

This page lists official Shadowsocks implementations under active maintenance.

Servers

shadowsocks: The original Python implementation.
shadowsocks-libev: Lightweight C implementation for embedded devices and low end boxes. Very small footprint (several megabytes) for thousands of connections.
go-shadowsocks2: Go implementation focusing on core features and code reusability.
shadowsocks-rust: A rust port of shadowsocks.

Feature comparison

	ss	ss-libev	go-ss2	ss-rust
TCP Fast Open	✓	✓	✗	✓
Multiuser	✓	✓	✗	✓
Management API	✓	✓	✗	✓
Redirect mode	✗	✓	✓	✗
Tunnel mode	✓	✓	✓	✓
UDP Relay	✓	✓	✓	✓
AEAD ciphers	✓	✓	✓	✓
Plugin	✗	✓	✗	✓

Clients

shadowsocks-android: Android client.
shadowsocks-windows: Windows client.
shadowsocksX-NG: MacOS client.
shadowsocks-qt5: Cross-platform client for Windows/MacOS/Linux.

Feature comparison

	ss-win	ssx-ng	ss-qt5	ss-android
System Proxy	✓	✓	✗	✓
CHNRoutes	✓	✓	✗	✓
PAC Configuration	✓	✓	✗	✗
Profile Switching	✓	✓	✓	✓
QR Code Scan	✓	✓	✓	✓
QR Code Generation	✓	✓	✓	✓