[boxingrock]

Shinobi is another option to consider. Besides the typical web gui, it gives you a decent "REST" API, so I ended up building a little flutter app for android which runs on top of a wireguard tunnel back to the site.

The only thing not open source is the cameras and don't hold your breath waiting on something to come out at a decent price. There's only like 5 MFGs that make the actual hardware so most consumer products are rebranded, software locked and sold at a loss to hook you into the subscription. I know Pine64 had some dev kits but nothing you could buy in quantity.