Kagi has been one of my all time favorite products. It has enriched my search experience drastically. One of my favorite features I don't see talked about enough is the keybindings. Using vim keys for navigating search results is such a fantastic user experience, and much like normal vim I'm not sure I could go back to navigating search any other way. I also really appreciate their AI quick-search feature is explicitly opt in and trigger by adding a "?" to the end of search. Their selection of widgets is also quite nice and I find my self reaching for them quite a bit.