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Realm vs 3proxy: catalog facts
Realm	3proxy
Free Free and open source under the MIT licence.	Free Free and open source.
Windows, Linux, Self-hosted, Command line	Windows, Linux, Self-hosted, Command line
Starts a relay with a single command Concurrent bidirectional forwarding	HTTP, SOCKS and port mapping in one small server Runs on routers through an OpenWrt package
Command-line only, with no graphical interface Documentation is mostly in the repository readme	Configured through text files with no graphical interface Takes some networking knowledge to set up securely
Downloadable app, Self-hosted	Downloadable app, Self-hosted
Open source	Open source
License: MIT	License not stated
No account needed	No account 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 2, 2026

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