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Outline VPN vs sing-box: catalog facts
Outline VPN	sing-box
Free The open-source software is free. Cloud hosting is paid separately.	Free Free and open source under the GPL.
Windows, macOS, Linux, Android, iOS	Windows, macOS, Linux, Android, Command line
Shadowsocks transport resists the blocking that stops ordinary VPNs Manager application makes server creation and key sharing simple	One binary covering WireGuard, Shadowsocks, VMess, Trojan, Hysteria and more A routing engine that picks an outbound per connection by domain, IP or process
You pay for and run the server yourself Access keys are shared secrets; anyone with one has your server	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
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 September 22, 2026	Official website Full listing and sources Checked September 21, 2026

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