OpenPetCam (Open Pet Cam) is free, open-source pet cam software. It runs on a cheap pan/tilt Wi-Fi camera flashed with Thingino, and a small server you own. You get live video on your phone, and when your dog leaves the picture the camera searches the room for her.
Cost / License
- Free
- Open Source (Apache-2.0)
Since
- New
Best alternatives are 
Frigate NVRand
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