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HAProxy vs Realm: catalog facts
HAProxy	Realm
Free HAProxy Community Edition is free and open source. HAProxy Enterprise is a paid product.	Free Free and open source under the MIT licence.
Linux, Self-hosted	Windows, Linux, Self-hosted, Command line
Handles extremely high connection rates with predictable latency Detailed health checking, queuing and rate limiting built in	Starts a relay with a single command Concurrent bidirectional forwarding
Configuration is its own language with a steep learning curve No native automatic certificate issuance; ACME is handled alongside it	Command-line only, with no graphical interface Documentation is mostly in the repository readme
Self-hosted	Downloadable app, Self-hosted
Open source	Open source
License: GPL-2.0	License: MIT
Not stated if an account is needed	No account 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 October 2, 2026

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