Compare software

Realm vs HAProxy: catalog facts
Realm	HAProxy
Free Free and open source under the MIT licence.	Free HAProxy Community Edition is free and open source. HAProxy Enterprise is a paid product.
Windows, Linux, Self-hosted, Command line	Linux, Self-hosted
Starts a relay with a single command Concurrent bidirectional forwarding	Handles extremely high connection rates with predictable latency Detailed health checking, queuing and rate limiting built in
Command-line only, with no graphical interface Documentation is mostly in the repository readme	Configuration is its own language with a steep learning curve No native automatic certificate issuance; ACME is handled alongside it
Downloadable app, Self-hosted	Self-hosted
Open source	Open source
License: MIT	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 September 22, 2026

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