I built a small free tool that asks 5 questions and then recommends a protocol — Zigbee, Z-Wave, Thread or Matter — with a sourced side-by-side comparison table: Smart home protocol picker · modernhomecompass
No signup, no ads gate. I made it for people who are just starting out and get stuck choosing between protocols.
I'd genuinely welcome feedback from this community on the recommendation logic and the sources — if you think a question is missing, or a recommendation looks off for a particular setup, tell me and I'll fix it.