Compare software

Outline VPN vs 3x-ui: catalog facts
Outline VPN	3x-ui
Free The open-source software is free. Cloud hosting is paid separately.	Free Free to use; the source code is published on GitHub.
Windows, macOS, Linux, Android, iOS	Web, Self-hosted
Shadowsocks transport resists the blocking that stops ordinary VPNs Manager application makes server creation and key sharing simple	Supports a long list of proxy and tunnel protocols in one panel Multi-user management from a browser
You pay for and run the server yourself Access keys are shared secrets; anyone with one has your server	Requires your own server and some networking knowledge Tied to Xray-core rather than other proxy engines
Downloadable app	Self-hosted
Open source	Open source
License: Apache-2.0	License not stated
Not stated if an account is 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 September 22, 2026	Official website Full listing and sources Checked September 24, 2026

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