Home Assistant is, in my opinion, the best smart home software available. It's free, open-source, privacy-focused, works with a huge number of devices, and can make your smart home do almost anything you can think of. Despite all that, Home Assistant definitely has its faor share of problems.

The team behind Home Assistant is best known for its incredible free and open-source smart home software, but the same team has also produced some hardware products. Nabu Casa, the commercial company set up by the creators of Home Assistant, currently sells a handful of products, including a dedicated Home Assistant hub and a prototype of a local smart speaker.