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Leaf vs sing-box: catalog facts
Leaf	sing-box
Free Free and open source under the Apache 2.0 licence.	Free Free and open source under the GPL.
Windows, Command line	Windows, macOS, Linux, Android, Command line
Wide range of proxy protocols and transports QUIC, TLS, WebSocket and Reality support	One binary covering WireGuard, Shadowsocks, VMess, Trojan, Hysteria and more A routing engine that picks an outbound per connection by domain, IP or process
No graphical interface; configured by file No release builds published on GitHub	JSON configuration that is genuinely complex to write correctly Documentation assumes you already know the protocols involved
Downloadable app	Downloadable app
Open source	Open source
License: Apache-2.0	License: GPL-3.0
No account needed	No account needed
Not stated if it works offline	Needs internet
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked September 21, 2026

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