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Leaf vs YASS: catalog facts
Leaf	YASS
Free Free and open source under the Apache 2.0 licence.	Free The project is offered at no cost; the listed source has no asserted license.
Windows, Command line	Windows, macOS, Linux, Android, Command line
Wide range of proxy protocols and transports QUIC, TLS, WebSocket and Reality support	Supports Shadowsocks and NaiveProxy Includes both command-line and Qt graphical interfaces
No graphical interface; configured by file No release builds published on GitHub	The Windows XP build requires the Universal UCRT package.
Downloadable app	Downloadable app
Open source	Open source
License: Apache-2.0	License: GPL-2.0
No account needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 8, 2026

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