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Z-Wave Long Range and its mile-long capabilities will arrive next year - Ars Technica
(arstechnica.com)
Home Assistant is open source home automation that puts local control and privacy first. Powered by a worldwide community of tinkerers and DIY enthusiasts. Perfect to run on a Raspberry Pi or a local server. Available for free at home-assistant.io
Maybe commercial MQTT? From the wiki it seems like mostly an intermediary protocol to get disparate things working on the same system. Their site is pure marketing garbage for explaining anything about it though.