Compare software

sing-box vs Happ: catalog facts
sing-box	Happ
Free Free and open source under the GPL.	Free Free to download, with optional donations to the developer.
Windows, macOS, Linux, Android, Command line	Windows, macOS, Linux, Android, iOS
One binary covering WireGuard, Shadowsocks, VMess, Trojan, Hysteria and more A routing engine that picks an outbound per connection by domain, IP or process	Supports VLESS Reality, VMess, Trojan, Shadowsocks and SOCKS Rule-based routing between proxies
JSON configuration that is genuinely complex to write correctly Documentation assumes you already know the protocols involved	A client only; you need proxy servers from elsewhere Source code not published
Downloadable app	Downloadable app
Open source	Closed source
License: GPL-3.0	License not stated
No account needed	Not stated if an account is needed
Needs internet	Not stated if it works offline
Official website Full listing and sources Checked September 21, 2026	Official website Full listing and sources Checked October 1, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.