Compare software

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

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