I'd have to circle back and look again because it's been a few years. I was able to get Zoneminder to do 95% of what I wanted even if it felt a bit clunky. Shinobi was an up-and-comer last time I was looking around, but I remember having some frustrations and decided to stick with BI. Source: 11 months ago

Shinobi: Very easy to setup and customize, but there's a 5+ second lag on the video feed vs. IRL. Source: about 1 year ago

If cost is a concern: shinobi.video is about the best I've ever seen. Integrated s3/bucket abilities, killer support, and can handle truely brain-breaking amounts of cameras. Otherwise, as others have mentioned: Milestone is damn nice. Source: about 1 year ago

A more contemporary alternative to ZoneMinder would be Shinobi: https://shinobi.video/. - Source: Hacker News / about 1 year ago

Have I got the software for you! Shinobi is the solution! Simple setup! Ninja easy! Sexy interface? Check. Easy setup? Yep. More than 4 camera streams at once? You got it. Person/Motion/Object detection? Yes, with the caveat that you really should use a GPU for it. PTZ? Uh-huh! Source: over 1 year ago

Found these guys but doesn't look like it's for sale yet and I am thinking there has to be someone working on a cheaper home use solution - https://sunflower-labs.com/. Source: about 1 year ago

Https://sunflower-labs.com/ It exists and is supposed to be available this year, but per their FAQ it will be astronomically expensive (they don't even sell them, they rent at $3k/month!). Source: almost 2 years ago

Has existed for several years, but cost is not yet consumer accessible. $10k last I checked. https://sunflower-labs.com. Source: almost 2 years ago