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Smart Lock without Phone Home
(partizle.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
I've been looking for the same. Most of what I've seen is homebrew stuff where the lock is in the wall and snaps into a slot or standout on the door. There are plenty of homebrew solutions for that which work using home-assistant or whatever, but I wish I could find more commercial solutions which are not using cloud and/or proprietary software.